Yazar "Deniz, Muhammed Akif" seçeneğine göre listele
Listeleniyor 1 - 20 / 23
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Accessory liver within the thoracic cavity(Springer France, 2018) Adin, Mehmet Emin; Cetincakmak, Mehmet Guli; Deniz, Muhammed Akif; Goya, CemilEctopic intrathoracic liver tissue is extremely rare. Studies are mainly limited to case reports. In the vast majority of reported cases, a diagnosis of intrathoracic liver tissue was made either after a thoracic surgery or during a postmortem examination. However, once included in differential diagnosis, surgical intervention or biopsy procedures may be avoided with optimal diagnostic approach. In the present study, we conducted a literature review and proposed a new classification method for accessory liver within the thoracic cavity. This approach may provide a better understanding of underlying pathophysiology and aid in determination of optimal diagnostic modality and clinical management of such cases. According to our literature review, type II ectopic liver is the most common subtype followed by types I and III. All types can be definitively diagnosed with imaging modalities. On the other hand, it is important to prevent patients, particularly children, from unnecessary radiation exposure during performance of sophisticated diagnostic imaging modalities. Ultrasound is a safe, low-cost and accessible imaging modality that has not been previously reported in diagnosis of this entity. With addition of Color Doppler Imaging, ultrasound may allow for diagnosis with high precision in types I and II, as demonstrated in the present study. Based on long-term follow-up of a case reported here, this study also illustrates the natural course of this entity via non-operative management. This approach may prevent an unnecessary surgical intervention.Öğe Can pre-procedural MRI signal intensity ratio predict the success of uterine arteryembolization in treatment of myomas?(Turkiye Klinikleri, 2021) Çakır, Çağlayan; Kılınç, Fatih; Deniz, Muhammed Akif; Karakaş, SemaBackground/aim: Magnetic resonance (MR) images, signal intensity ratios calculated using region of interests (ROI) in T2W images by proportioning the dominant myoma to iliac muscle can aid patient selection and, thus, in achieving better outcomes with the uterine artery embolization (UAE) procedure. The present study investigates the association between the success of UAE treatment with signal intensity (SI) ratio of the dominant myoma to the iliac muscle in MR imaging performed prior to the procedure. Materials and methods: This is a retrospective study and included 30 patients who admitted to our clinic between February 2017 and July 2019 due to symptoms associated with myoma and who underwent MR imaging before and after UAE treatment. All patients, MR images obtained before UAE treatment and at the 12th month after the procedure were evaluated. In MRI, SI values were calculated by proportioning the dominant myoma to the iliac muscle using circular ROI in T1 weighted (W), T2W, and post-contrast T1W images. In the present study, 50% or more volumetric regression of the myoma with infarction of fibroids (loss of enhancement) at the 12-month follow-up MRI after the procedure was considered a successful procedure. Results: Myoma volumes calculated in MR images showed significant differences between the MRI performed before UAE procedure and the MRI performed at the 12th month after the procedure (p < 0.0001). SI ratio calculated from pre-procedure T2W MR images was found to be a significant determinant of 50% or more volumetric regression in the myoma after UAE procedure (p = 0.017), T1W, post-contrast T1W images were not statistically significant (p = 0.211). Conclusion: Our results indicate that SI ratio of the dominant myoma to the iliac muscle calculated using ROI in T2W images of MR studies performed before UAE procedure can predict the success of the procedure.Öğe CT Evaluation of Swallowed Foreign Bodies Located in the Gastrointestinal System(Cureus Inc, 2022) Deniz, Muhammed Akif; Turmak, MehmetBackground and objective CT imaging is important in detecting the location and the structure of swallowed foreign bodies and assessing their complications, due to its features such as the ability to show the detailed anatomical structure and enable multiplanar examination. In this study, we aimed to analyze the CT findings of swallowed foreign bodies located in the gastrointestinal tract and compare them with the data in the existing literature. Materials and methods We conducted a retrospective archive study to achieve our goals. Patients who presented to our radiology department with the preliminary diagnosis of foreign body ingestion, abdominal pain, or acute abdomen and were found to have a foreign body in the gastrointestinal tract on CT between April 2018 and April 2021, especially those in whom the presence of a foreign body was confirmed by endoscopy or surgery, were included in our study. The patients were evaluated in terms of age, gender, foreign body type, foreign body localization, and complications. Results A total of 31 patients (15 males and 16 females) were included in the study. The patients' age ranged from 1 to 67 years, and the mean age was 28.5 +/- 5.4 years. The most common foreign bodies found were metallic toy parts (n=11, 35%), and most of the foreign bodies were located in the ileum (n=9, 29%) of the patients. Complications were observed in nine patients (29%). In patients with complications, the most common finding was perforation (n=3, 38%). Conclusion When a CT exam is performed on patients with abdominal pain, the gastrointestinal tract should be carefully evaluated to determine if a foreign body is involved and to analyze the complications caused by the foreign body.Öğe CT-guided lung biopsy: diagnostic accuracy and complication rates of biopsy techniques(Marmara University, 2022) Deniz, Muhammed Akif; Çakır, Çağlayan; Kılınç, Fatih; Kurt, Osman; Deniz, Zelal TaşObjective: We aimed to evaluate the diagnostic accuracy and complication rates of computed tomography (CT)-guided core needle biopsy and fine needle aspiration biopsy (FNAB). Materials and Methods: Patients who underwent CT-guided lung mass biopsy were included. The patients were evaluated in terms of age, gender, lesion diameter, lesion localization, depth of the mass, type of biopsy procedure (core needle biopsies and FNAB). Results: The accuracy rate of FNAB in diagnostic material was found to be 100% in terms of benign, malignant and all lesions. The specificity and sensitivity of FNAB was found to be 100%. The diagnostic accuracy rate of core needle biopsy was found to be 70% in benign lesions, 100% in malignant lesions. The specificity of core needle biopsy was 90% and sensitivity 100%. There was no statistically significant difference between the two biopsy techniques in terms of complications. Conclusion: In conclusion, we found that the diagnostic rates of FNAB and core needle biopsy were close in malignant lesions, the diagnostic rate of core needle biopsy was higher in benign lesions, and there was no difference in terms of complications in both biopsy techniques.Öğe Detection of-incidental pulmonary embolism with multi-slice computed tomography in cancer patients(Elsevier Science Inc, 2017) Deniz, Muhammed Akif; Deniz, Zelal Tas; Adin, Mehmet Emin; Akil, Ferit; Turmak, Mehmet; Urakci, Zuhat; Cetincakmak, Mehmet GuliThe aim of this study is to show the frequency of incidentally found (pulmonary thromboembolism) PTE in oncological patients and evaluate dispersion of incidents in terms of underlying primary tumor and seek risk factors associated with incidental PTE. Among one thousand oncology patients, 46 (4.6%) individuals found to have incidental PTE. Of positive patients, the highest proportion (24%) was belong to breast cancer group (n = 11). The most common location for pulmonary emboli was the lower lobe branch of right pulmonary artery (n = 33, 71.7%). Evident PTE had not been reported in final radiology reports of 21 cases. (C) 2016 Elsevier Inc. All rights reserved.Öğe Diagnostic contribution of focal cortical dysplasia MRI imaging findings and ADC values(Springer, 2019) Aslan, Aydin; Deniz, Muhammed Akif; Deniz, Zelal Tas; Turmak, Mehmet; Ekici, FaysalBackgroundFocal cortical dysplasia (FCD) is a condition that often interferes with the cranial mass. Knowledge of focal cortical dysplasia magnetic resonance imaging (MRI) characteristics is of utmost importance for diagnosis. This study aimed to determine the diagnostic contribution of cranial MRI and the apparent diffusion coefficient (ADC) in FCD.ResultsCranial MRI revealed subcortical hyperintensity (SCH) in 52 patients (82.5%), blurring of the gray-white matter (GWM) interface (blurring) in 52 patients (82.5%), cortical thickening (CT) in 48 patients (76%), cortical signal increase (CSI) in 41 patients (65%), and transmantle sign (TMS) in 29 patients (46%). All of the FCDs had a diffusion increase in diffusion-weighted images (DWIs). The mean ADC value at the lesion level was 1.087 x 10(-3) mm(2)/s (0.82/1.316 x 10(-3) mm(2)/s), which was significantly higher than the mean ADC value measured from the contralateral symmetric region (0.758 x 10(-3) mm(2)/s, 0.678/0.872 x 10(-3) mm(2)/s, p = 0.001).ConclusionResults of this study revealed that the most common MRI findings in FCD patients are SCH, blurring, and CT. These findings aid in an easier diagnosis in patients with suspected FCD. All of the lesions studied here in had a diffusion increase in DWI. The quantitative mean ADC values detected in the differential diagnosis of other lesions with a diffusion increase can be used as a reference. Therefore, in addition to the ADC values and electroencephalography (EEG) findings, the conventional MRI findings of FCD, which is resistant to medical treatment, can help to facilitate the diagnosis of FCD, which can be treated with surgery.Öğe Effectiveness of sonoelastography and diffusion MRI ADC value in discriminating between malignant and benign lesions of the breast(Yerküre Tanıtım & Yayıncılık Hizmetleri A.Ş., 2020) Maçin, Sultan; Deniz, Muhammed Akif; Bükte, Yaşar; Deniz, Zelal Taş; Sarıca, Özgür; Oysu, Aslıhan SemizObjective: We aimed to evaluate the diagnostic value and comparison of sonoelastography and diffusion-weighted magnetic resonance imaging in differentiation of benign and malignant breast masses. Method: Forty-five patients who were referred to our Radiology Department for the biopsy of a known breast mass following a breast MRI were evaluated by sonoelastography using a 5-scaled Tsukuba scoring system and measurements of ADC values on diffusion weighted MRIs. Contribution of the Tsukuba scores and ADC values of the masses to the conventional methods were evaluated. Results: Histopathological results of all masses with Tsukuba scores 1 and 2 were evaluated as benign. Histopathological results of 37.5% of patients with a Tsukuba score of 3 were found to be benign and 62.5% of the patients were found to be malignant. Histopathologically 80% of the patients with a Tsukuba score of 4 were evaluated to have malignant, while all (100 %) of the patients with a Tsukuba score of 5 were considered to have malignant disease. Statistically significant correlation was found between the histopathological results and Tsukuba scoring system (p<0.05). Sonoelastographic sensitivity, specificity, positive, and negative predictive values were 83.3%, 96.3%, 93.7% and 89.6%, respectively in the patients with Tsukuba scores of 4 and 5. The mean ADC values of histopathologically proven malignant, and benign masses were 0.95±0.17x10-3 mm2 /sec and 1.37±0.16x10-3 mm2 / sec, respectively. The mean ADC value of histopathologically proven malignant masses was significantly lower than histopathologically proven benign masses (p<0.01). At sonoelastographic evaluation, one false-positive and 5 false-negative results were found. Three out of 4 false-negative results were diagnosed correctly using ADC values. False-negativity was detected in one lesion diagnosed based on both sonoelastographic results, and ADC values. Conclusion: We think solely sonoelastography or ADC evaluations are inadequate, however, can be used in differentiation of benign and malignant breast masses.Öğe Erişkinlerde invajinasyonların çok kesitli bilgisayarlı tomografi İle değerlendirilmesi(Harran Üniversitesi Tıp Fakültesi, 2020) Deniz, Muhammed Akif; Deniz, Zelal TaşAmaç: Bu çalışmanın amacı erişkinlerde karın ağrısı sebeplerinden biri olan invajinasyon olgularının bilgisayarlıtomografi (BT) görüntüleme özelliklerini ve etyolojik nedenlerini sunmak ve böylece invajinasyonun tanınabilirliğinivurgulamaktır.Materyal ve Metod: Çalışmamızda Ocak 2010-Temmuz 2019 tarihleri arasında kliniğimize karın ağrısı nedeniylebaşvurmuş ve intravenöz kontrastlı batın BT’de invajinasyon tanısı almış hastaların görüntüleri retrospektif olarakincelenmiştir. Hastalar; yaş ve cinsiyet, invajinasyon düzeyi, invaje segment uzunluğu, invajinasyon sebepleriaçısından değerlendirildi.Bulgular: Çalışmamızda 23 (%52) ü erkek, 21 (%48) i kadın olmak üzere toplam 44 hastanın kontrastlı batın BTsi incelendi. Hastaların yaş ortalaması 39,1 (18-78) yıl idi. İnvajinasyon 8 (%18) hastada kolon; 35 (%79) hastadaince bağırsak, 1 hastada (%2) ileokolik yerleşimliydi. Kolon invajinasyonlarında en sık neden (%62,5) malignite,ince bağırsak invajinasyonlarında en sık neden (%48,5) benign bir patoloji idi. Çalışmamızdaki bütün hastalardeğerlendirildiğinde 10 hastada (%23) malign bir patoloji, 20 hastada (%45) benign bir patoloji izlenmiş olup 14hastada (%32) etyolojik faktör bulunamamış ve idiyopatik olarak kabul edilmiştir.İnvaje segment uzunluğuna bakıldığında kolon anslarında ortalama 5 (2-20 cm) cm; ince bağırsak segmentlerindeortalama 3,6 cm (1-13 cm) idi. Kolon anslarında nispeten daha uzun segment etkilenmişti.Sonuç: Çalışmamızda invajinasyonların %18 i kolon, %79 u ince bağırsak yerleşimliydi. Toplam %68 olgudaetyolojide malign veya benign bir patoloji mevcuttu. Bilgisayarlı tomografi erişkinlerde karın ağrısının bir sebebiolan invajinasyonların tanısını kolaylaştırmakta ve etyolojik nedeni büyük oranda saptayabilmektedir.Öğe Evaluation of lamina papyracea dehiscence with paranasal computed tomography(Springer, 2024) Deniz, Muhammed Akif; Tekinhatun, MuhammedIntroductionThe lamina papyracea is the thin line between the ethmoid sinus and the medial orbital wall. Knowledge of the presence of the lamina papyracea dehiscence (LPD) bears critical importance to prevent misdiagnosis of fractures at this level and to define the anatomy before sinonasal surgery, including Functional Endoscopic Sinus Surgery (FESS). The present study is therefore intended to determine the incidence of LPD in paranasal computed tomography, to identify its imaging characteristics in CT, and to compare with the literature.Materials and methodsThe current study included patients who underwent paranasal CT scanning for any reason in our clinic between January 2018 and January 2022. Patients were evaluated in terms of age, gender, and presence of LPD. Patients with dehiscence were evaluated in terms of age, gender, dehiscence localization (right, left), tissue at the level of dehiscence, dehiscence size, and dehiscence grade.Results1000 patients with a mean age of 32. +/- 16.3 (min = 18-max = 79) were included in the study. 20 patients (2%) were found to have LPD. Of those with LPD, 14 (70%) were grade 1, 4 (20%) were grade 2 and 2 (10%) were grade 3. Again of those with LPD, 14 (70%) had LPD localized on the right and 6 (30%) had LPD on the left. In 12 (60%) of the patients with LPD, herniated tissue was detected. Among these patients with herniation, fatty tissue herniation was observed in 10 (83.3%) and medial rectus muscle herniation was observed in 2 (16.7%).Discussion and ConclusionComprehensive evaluation for and identification of LPD are very important before possible sinus surgery.Öğe Evaluation of the multi-slice computed tomography outcomes in diaphragmatic injuries related to penetrating and blunt trauma(Elsevier Science Inc, 2018) Turmak, Mehmet; Deniz, Muhammed Akif; Ozmen, Cihan Akgul; Aslan, AydinPurpose: Traumatic diaphragmatic rupture is a diagnostic challenge for both surgeons and radiologists and generally occurs secondary to blunt and penetrating trauma of thoracoabdominal region. Material and methods: 56 patients who underwent surgical. procedure due to blunt or penetrating trauma were included to the study. Results: There were 37 diaphragmatic ruptures in the left side and 19 patients in the right side. The most common radiological finding was the direct monitoring of defect (54,3%). Conclusion: Findings suggestive of diaphragmatic rupture must be carefully evaluated in patients with blunt or penetrating thoracoabdominal trauma.Öğe Evaluation of thyroid Zuckerkandl tubercle by computed tomography(Springer France, 2022) Deniz, Muhammed Akif; Turmak, Mehmet; Hattapoglu, Salih; Akbudak, Ibrahim; Tay, MuhyettinPurpose This study investigated the incidence of thyroid Zuckerkandl Tubercle (ZT) using a computed tomography (CT) scan of the neck with contrast to identify the typologies in ZT-positive CT scans, investigate the presence of nodules located in that area, and compare the results with the relevant literature. Methods We selected and retrospectively examined the CT scan images of patients who presented to our clinic with CT scans of the neck with contrast that clearly showed thyroid tissue and boundaries. Patients were evaluated based on age, gender, and presence of thyroid ZT. Patients with thyroid ZT were further investigated for localization and type of tubercles as well as for presence of nodules at the tubercle level. Results A total of 1000 patients (mean age: 48.4 +/- 19.1) were included in the study. Out of the total 222 (22.2%) patients who had thyroid ZT, 134 (60.4%) patients had unilateral thyroid ZT on the right side and 29 (13.1%) patients had unilateral thyroid ZT on the left side; 59 (26.6%) patients had bilateral thyroid ZT. In addition, nodules at the ZT level were observed in 13 (1.3%) of the patients. A review of all cases with ZTs indicated that 63% were Type 1, 31% were Type 2, and 5% were Type 3. Conclusion During the thyroid operations, ZT is essential for locating the recurrent laryngeal nerve. Reporting the presence of ZTs based on CT scans is crucial because it can prevent unnecessary interventional procedures, misdiagnoses, and likely complications in patients with planned thyroid operations.Öğe Gynecomastia on Thoracic Computed Tomography(Springernature, 2024) Deniz, Muhammed Akif; Oz, Rukan MatsarBackground and objective Gynecomastia is a benign proliferation of ductal epithelium in the retroareolar region in male patients. The aim of this study was to investigate the frequency of gynecomastia in male patients who underwent thoracic computed tomography (CT) imaging at our clinic, assess possible causes, highlight the imaging characteristics of gynecomastia, and compare our findings with the literature. Materials and methods Male patients over 18 years of age who underwent thoracic CT imaging in our clinic were included in the study. Patients were initially assessed based on age and the presence of gynecomastia. The patients with gynecomastia were evaluated in terms of age, gynecomastia localization (right, left, and bilateral), gynecomastia type (nodular, dentritic, and diffuse), and possible etiology. Results The study included 1500 patients with a mean age of 45.6 +/- 21.7 years, and 470 (31.3%) patients had gynecomastia. Gynecomastia was on the right side in 11.3%, on the left side in 11.1%, and bilateral in 77.7% of the patients. Gynecomastia was nodular in 52.1%, dendritic in 35.3%, and diffuse in 17.2% of the patients. The causative factor could not be identified in 44.3% of the patients with gynecomastia. Among cases where the etiology was identified (56.7%), the most common factors were cancer (23.4%), chronic kidney disease (CKD) (13.2%), and chronic hepatitis B (10.7%). Conclusion When evaluating thoracic CT, the breast area, in addition to the lungs, chest wall, and bone structures, should also be evaluated carefully. With the increased use of thoracic CT scans, incidentally detected gynecomastia in patients is also on the rise. Knowing the presence of gynecomastia is very important for the clinician to determine the etiology and treat the underlying disease. Therefore, detecting and reporting gynecomastia on thoracic CT can prevent unnecessary advanced breast imaging methods and play a very important role in treating the underlying etiology.Öğe İntraosseöz migrasyonlu kalsifik tendinitin radyolojik değerlendirmesi: tek merkez deneyimi(Pamukkale Üniversitesi, 2025) Tekinhatun, Muhammed; Alver, Kadirhan; Akbudak, İbrahim; Turmak, Mehmet; Deniz, Muhammed AkifAmaç: Kalsiyum depositlerin kemik, kaslar ve subakromiyal-subdeltoid bursa gibi komşu dokulara göçü, tanısal zorluklara ve gereksiz prosedürlere yol açabilen nadir bir komplikasyondur. Bu çalışmanın amacı, rotator manşet kalsifik tendinitinin nadir görülen intraosseöz migrasyonunu tanımlamak ve bu vakaları demografik özellikler, ilişkili patolojiler ve radyolojik bulgular açısından değerlendirmektir. Gereç ve yöntem: Bu retrospektif çalışma, Ocak 2021 ile Eylül 2024 tarihleri arasında gerçekleştirilmiş ve 3,755 omuz MRG incelemesi gözden geçirilmiştir. Hariç tutulanlar arasında hareket artefaktı olan hastalar, pediatrik vakalar, travma veya cerrahi öyküsü olanlar ve enfeksiyon vakaları yer almıştır. İki radyolog kalsifik tendinit ve intraosseöz migrasyon vakalarını bağımsız olarak değerlendirmiş, bulgular demografik veriler ve ilişkili patolojilerle analiz edilmiştir. Bulgular: 3,000 tarama sonucunda vakaların %8,17'sinde kalsifik tendinit tespit edilmiştir. İntraosseöz komplikasyonlar toplam popülasyonun %0,5’inde ve kalsifik tendinit vakalarının %6,12'sinde gözlenmiştir. Kalsifik tendinit hastalarının çoğunluğu (%73,77) kadın olup, intraosseöz komplikasyonların %86,67’si kadın hastalarda görülmüştür (p=0.211 (Fisher's Exact Test)). İntraosseöz komplikasyonlar, supraspinatus ve infraspinatus tendonlarının daha yüksek tutulma oranlarıyla ilişkilendirilmiştir (%73'er), komplikasyonu olmayan hastalarda ise bu oranlar sırasıyla %63 ve %36 olarak gözlenmiştir (p<0.001). Sonuç: Kalsifik tendinit, nadir görülen intraosseöz uzanımlar gösterebilir ve doğru tanı için dikkatli görüntüleme gerektirir. MRG ve BT, bu vakaların tanısında kritik bir rol oynar. Tedavi edilmeyen vakalarda komplikasyonlar devam ederken, ultrason rehberliğinde yapılan enjeksiyon tedavisi etkili sonuçlar vermektedir. Kalsifik tendinit, görüntülemede tümörleri taklit edebileceğinden doğru ayırıcı tanı gereklidir. İntraosseöz komplikasyonların erken teşhisi ve uygun tedavisi esastır. Gelecekteki çalışmalar, daha geniş popülasyonlar ve uzun dönem takiplerle prognoz ve tedavi sonuçlarını daha iyi değerlendirmelidir.Öğe Kanser hastalarında insidental pulmoner tromboembolinin çok kesitli bilgisayarlı tomografi (ÇKBT) ile değerlendirilmesi(2015) Deniz, Muhammed Akif; Çetinçakmak, Mehmet GüliAmaç: Kanser hastalarında insidental pulmoner tromboemboli (PTE) nin Çok Kesitli Bilgisayarlı Tomografi (ÇKBT) ile yaygınlığını, primer kanserlere göre dağılım özelliklerini saptamak, insidental PTE tespit edilen hastalarda risk faktörlerini değerlendirmek, rutin değerlendirmede raporlanma oranınını araştırmak ve bulguları literatür bilgileriyle karşılaştırmaktır. Gereç ve Yöntem: Mart 2012-Eylül 2013 tarihleri arasında Dicle Üniversitesi Radyoloji Anabilim dalına başvuran tanılı 1000 kanser hastasının 16 dedektörlü Toshiba Activion ve 64 dedektörlü Philips Brillance BT cihazlarında çekilen Kontrastlı Torax Bilgisayarlı Tomografi görüntüleri retrospektif olarak sırayla incelendi. Hasta grupları primer kanserlerine göre gruplandırıldı. Tiroid ve paratiroid kanserleri endokrin bez kanserleri grubunda; daha az sıklıkla görülen nazofarenx, larenx, parotis ve beyin kanserleri diğer hasta grubu adı altında toplandı. Öncelikle hastaların embolileri olup olmadığı araştırıldı. İnsidental PTE saptanan hastaların emboli lokalizasyonu, primer kanser gruplarına göre sıklığı, risk faktörleri, akciğer parankim bulguları ve rutin değerlendirmede raporlanma oranları değerlendirildi. Bulgular: İncelenen 1000 onkoloji hastasının 46 sında (%4.6) insidental PTE saptandı. PTE saptanan hastaların 29 u (%63) kadın, 17 si (%37) erkekti. Hastalarda en yüksek oranı 11 hasta (%24) ile meme kanseri oluşturmaktaydı. En az hasta grubunu birer hasta (%2.1) ile böbrek, karaciğer, kemik-yumuşak doku, mesane, pankreas kanserleri oluştururken; lenfoma, endokrin bez, testis ve diğer kanser gruplarında insidental PTE saptanmadı. Emboli en sık 33 hastada (71.7) sağ pulmoner arter alt lob dalında yerleşikti. Trombüs saptanan hastalarda en sık 20 (%43.4) hasta da alt extremite venöz sistemde trombüs mevcutken, 21 hastada (%45.6) venöz sistemde trombüs saptanmadı. Emboli varlığı 11 (%24) hastada rapor edilmemişti. En sık görülen akciğer bulgusu 16 (%34.7) hastada subsegmenter atelektazi ve fibrotik bantlardı. Tartışma-Sonuç: Kanser hastaları tromboemboliye yatkın hastalardır. İncelediğimiz 1000 hastanın 46 sında (%4.6) ÇKBT ile literatür ile uyumlu olarak insidental PTE saptadık. Kanser hastalarının takibinde sıklıkla kullanılan kontrastlı torax BT de hasta asemptomatik olsa bile pulmoner arterlerin dikkatli bir şekilde incelenmesi, insidental PTE saptanmasını kolaylaştırmakta ve bu durum kanser hastalarınında mortalite, morbiditeyi yakından etkilediğinden klinisyeni uyarmaktadır. Anahtar kelimeler: İnsidental pulmoner tromboemboli (PTE), kanser, Çok kesitli bilgisayarlı tomografi (ÇKBT)Öğe Multislice computed tomography imaging of gastrointestinal stromal tumors(2017) Araç, Eşref; Emin, Mehmet; Deniz, Muhammed Akif; Sezer, Nadir; Taş, Zelal Deniz; Göya, CemilGastrointestinal stromal tumors (GIST) are mesenchymal tumors that constitute 1-3% of primary gastrointestinal tumors and approximately 5% of all sarcomas of the gastrointestinal tract. Multislice Computed Tomography (MSCT) is a highly sensitive imaging technique for detecting GISTs. We retrospectively evaluated findings of 56 consecutive subjects that were examined at Dicle University, School of Medicine, between 2008-2015 and diagnosed with GIST. Lesions were divided into two clinically distinct entities as recurrent and primary lesions. Densities of lesions in comparison to liver, origins of and spreading of the lesions, dimensions of the lesions, behavior pattern, and factors such as contour properties, invasion, and calcification which could potentially indicate malign behavior were also evaluated. Age span of included subjects were between 28 and 81. The most common tumor location for hollow organs was found to be stomach (n=19, 32%). In extra-luminal, regions the most common tumor location was found to be mesentery (n=4). Hansfield Unit densities of tumoral lesions in comparison to liver density were hypodens (n=32, 71%), isodens (n=9, 20%) and hyperdens (n=4, %9) in a descending order. The tumor invasion was found to be effecting liver, peritoneum, and bladder, in a descending order. In 11(24%) subjects, distant metastasis to the liver was evident. In 4(9%) subjects peritoneum, in 3(7%) subjects adrenal gland and in 1(2%) subject bone metastasis was evident. MSCT is an important and indispensable modality for the detection, localization and identification of GISTs that can be seen in different parts of the gastrointestinal tract.Öğe Nadir bir orbital patoloji: Persistan hiperplastik primer vitreus(Hayat Sağlık ve Sosyal Hizmetler Vakfı, 2025) Deniz, Muhammed Akif; Aslan, AydınAmaç: Persistan hiperplastik primer vitreus (PHPV), embriyolojik primer vitreus ve hyaloid damar sisteminin gerilememesi nedeniyle ortaya çıkan konjenital bir anomalidir. Etkilenen gözlerde anatomik ve visual sonuç üzerinde önemli etkisi olabilir. Amacımız PHPV tanısı konulmuş hastaların Manyetik Rezonans Görüntüleme (MRG) özelliklerini sunmak ve literatürle karşılaştırmaktır. Yöntemler: Çalışmamız retrospektif bir arşiv çalışması olup Ocak 2010-Ocak 2020 tarihleri arasında merkezimizde orbital MR çekimi yapılan ve görüntülemelerinde PHPV tanısı bulunan 9 hasta çalışmaya dahil edilmiştir. Hastalar yaş, cinsiyet, etkilenen orbita (sağ-sol, unilateral-bilateral), eşlik eden ek anomaliler açısından değerlendirildi. Bulgular: Çalışmaya alınan 9 hastanın 8’i erkek 1’i kız idi. Hastaların yaş aralığı 3 ay-56 yaş olup yaş ortalaması 10,8 idi. Bilateral tutulum 2 (%22) hastada, unilateral tutulum 7 (%78) hastada (5 hastada sağ, 2 hastada sol) izlendi. Mikroftalmi 5 hastada, dismorfik orbita 2 hastada, retinal hemoraji-dekolman 3 hastada izlenmiştir. PHPV olgularına eşlik eden ek kranial patolojiler değerlendirildiğinde; 1 hastada lizensefali, 1 hastada porensefalik kavitasyon ve 2 hastada optik sinir periferinde sıvı artışı izlendi. Sonuçlar: Sonuç olarak tek taraflı tutulum, mikroftalmi ve ön kamaranın kollabe olması PHPV ayırıcı tanısında en önemli klinik ipuçlarıdır. PHPV’den şüphelenildiğinde retrolental kitle ve huni şeklinde retina dekolmanı MR görüntülemede tanı koymada son derece önemli bulgulardır.Öğe Orbital MRI in thyroid-associated orbitopathy(MediHealth Academy Yayıncılık, 2022) Deniz, Muhammed Akif; Turmak, Mehmet; Pekkolay, Zafer; Hattapoğlu, SalihAim: Thyroid-associated orbitopathy (TAO) is the most common cause of proptosis in adults and the clinical picture is mostly associated with thyroid dysfunction. MRI is frequently used because of its advantages, such as high soft tissue resolution, multiple plane evaluation, and no risk of ionizing radiation exposure to the lens. The research aim was to present cases of thyroid orbitopathy with MRI findings and to compare the findings with existing literature. Material and Method: Patients who visited our radiology clinic with a preliminary diagnosis of TAO between April 2015 and February 2021 and underwent orbital MRIs were included in the study. We evaluated parameters such as age, sex, presence of proptosis, orbital muscle involvement, increase in orbital fatty tissue, and lacrimal gland involvement. Results:A total of 35 patients were included in our study. The mean age was 40.6 (18-60) years, 19 (54%) patients were female, and 16 (46%) were male. All patients were diagnosed with Graves’ disease, whereas no patient was diagnosed with Hashimoto’s thyroiditis. The most common findings were proptosis in 33 (94%) patients, inferior rectus involvement in 27 (77%) patients, and medial rectus muscle involvement in 25 (71%) patients. No significant correlation was found between the presence of uni/bilateral involvement and TSH values (p = 0.008). Conclusion: In conclusion, since the presence of orbital involvement is crucial for treating thyroid diseases, all orbital structures involved should be reported by imaging. Orbital MRI is an effective imaging modality in the detection and differential diagnosis of TAO.Öğe Perkütan tedavi edilmiş karaciğer kist hidatik olgularının retrospektif değerlendirilmesi(Van Yüzüncü Yıl Üniversitesi Tıp Fakültesi, 2020) Deniz, Muhammed Akif; Deniz, Zelal Taş; Hattapoğlu, Salih; Çetinçakmak, Mehmet GüliGiriş: Amacımız perkütan tedavi edilen karaciğer kisthidatik olgularını değerlendirmek, tedavi etkinliğini,komplikasyon oranını ve tedaviye yanıt vermemişhastalarda başarısızlık nedenlerini araştırmaktır.Materyal ve Metod: Çalışmamız retrospektif bir çalışmaolup girişimsel radyoloji birimimizde Ocak 2012- Kasım2018 tarihleri arasında perkütan tedavi uygulanmış vetedavi sonrası takibi kendi kliniğimizce yapılmış hastalarçalışmaya dahil edilmiştir.Hastalar yaş, cinsiyet, karaciğerde kistin yerleşimlokalizasyonu, işlem yapılan kist sayısı, kist tipleri ve kistboyutu açısından değerlendirilmiştir. Başarısız işlemkriterlerimiz; septasyon-kalsifikasyon izlenmeksizin kistboyutunda artış, kist evresinde değişiklik olmaması,ekstravazasyon ve nüks varlığıdır.Bulgular: Çalışmamızda yaş aralığı 4-72 arasında değişen38’i (%36,5) erkek, 66’sı (%63,5) kadın olmak üzeretoplam 104 hastaya 119 işlem yapılmıştır. Perkütan tedaviyapılan kistlerin boyutları 4-16 cm arası olup ortalamaçap 7,8 cm idi. Kistlerin 92’si (%77) tip 1, 25’i (%21) tip2 ve 2’si (%1,6) tip 3 kist hidatik ile uyumluydu. Yapılan101 işlem (%85) başarılı olup; 18 işlem (%15) başarılıolmadı. Başarılı olmayan işlemlerin 5’inde (%28) safrakaçağı, 2’sinde (%11) ekstravazasyon, 3’ünde (%17)yetersiz medikal tedavi ve 8’inde (% 44) nüks mevcuttu.Sonuç: Kist hidatik olgularında perkütan tedavi aynıseansta birden çok kiste uygulanabilen, komplikasyonoranı düşük oldukça etkili bir yöntemdir.Öğe Persistent trigeminal artery detected on computed tomography angiography(Springer France, 2022) Deniz, Muhammed Akif; Turmak, Mehmet; Hattapoğlu, Salih; Tekinhatun, MuhammedPurpose This study aimed to investigate the prevalence of persistent trigeminal arteries (PTAs) using computed tomography (CT) angiography, emphasize its major characteristics, and compare the findings with those reported in the relevant literature. Methods Patients who underwent cerebral CT angiography in our radiology clinic for any preliminary diagnosis between December 2013 and December 2020 were included in this retrospective study. The patients were reviewed in terms of their age, sex, and the presence of PTAs. The localization of the PTA, vascular connection, PTA type (according to Saltzman and Salas classification), and vascular pathology at the level of anastomoses were examined in the patients with PTAs. Results A total of 1150 patients, (632 [55%] males and 518 [45%] females) were included in this study. A total of seven (0.6%) patients had PTAs. PTAs were located on the right and left sides in three (43%) and four (57%) patients, respectively. A total of three (43%), two (28%), and two (28%) cases were classified as types I, II, and III PTA based on the Saltzman classification, respectively. Moreover, four (57%) and three (43%) cases were lateral and medial types based on the Salas classification, respectively. Conclusion In conclusion, understanding the diagnosis and classification of PTAs is crucial for the diagnosis of possible vascular pathologies by neuroradiologists and physicians performing neurovascular interventional procedures or operations. If these vascular pathologies remain undetected, they may cause fatal bleeding or embolism during surgeries and endovascular procedures.Öğe A Rare Neck Pathology in Children; Congenital Sialocutanous Fistule: A Case Report(Bentham Science Publ Ltd, 2022) Deniz, Muhammed AkifIntroduction and Background: In this article, we aimed to present a congenital sialocutaneous fistula originating from the parotid gland in a 4-year-old child with MR findings. Case Presentation: A 4-year-old male patient was admitted to our clinic with a small hole in the inferior right half of the neck and a sticky fluid coming out of this area. Neck ultrasonography (US) and contrast neck Magnetic Resonance Imaging (MRI) were performed on the patient. In the US, a millimeter linear, vaguely hypoechoic appearance was observed in the subcutaneous tissue at this level on the neck. In contrast-enhanced neck MRI imaging, at the level of the right parotid tail, a millimetric linear fistula tract was observed, which was thought to originate from the superficial parotid lobe and extended to the skin at the proximal level of the right sternocleidomastoid (SCM) muscle. After suppressing surrounding fatty tissues in fat-suppressed contrast-enhanced series, this tract area became slightly pronounced. Conclusion: In conclusion, sialocutaneous fistula should be considered among the differential diagnoses in cases of skin fistulization in children. In terms of differential diagnosis, MRI is a very effective imaging method due to its high soft-tissue resolution.
