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Öğe Congenital cholesteatoma of the mastoid region(Headley Brothers Ltd, 2000) Cüreoglu, S; Osma, Ü; Oktay, MF; Nazaroglu, H; Meric, F; Topçu, ICongenital cholesteatoma may arise in the petrous apex, mastoid, middle ear, or external auditory canal. The least common site being the mastoid process. We present one case of primary mastoid cholesteatoma confirmed by clinical examination, surgical findings and radiological evaluation.Öğe Effects of intensive and moderate cellular phone use on hearing function(Taylor & Francis Inc, 2006) Oktay, MF; Dasdag, Spurpose of this stud), is to investigate the effects of radiation emitted by mobile phones on the hearing of users. The study was carried out oil three groups: 1) 20 men who have used a cellular phone frequently and spoken approximately 2 h per day for four years; 2) 20 men who have used a cellular phone for 10-20 min per day for four years; and 3) 20 healthy men who have never used a cellular phone (the control group). Brainstem evoked response audiometric (BERA) and pare tone audiometric (PTA) methods were used to measure the effects of exposure on hearing function of the subjects. In BERA measurements, I-III, III-V, and I-V interpeak latencies were evaluated. Interpeak latency of subjects in two experimental groups was compared to that of subjects in the control group. The BEPA results showed no differences among the groups (p > 0.05). In PTA measurements, detection thresholds at 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, 4000 Hz, and 8000 Hz frequencies were measured in all three groups. No differences were observed between moderate mobile phone users (10-20 min. per day) and control subjects. However, detection thresholds in those who talked approximately 2h per day were found to be higher than those in either moderate users or control subjects. Differences at 4000 Hz for both bone and air conduction for right ears, and 500 Hz, and 4000 Hz bone and air conduction for left ears were significant for mean hearing threshold. This study shows that a higher degree of hearing loss is associated with long-term exposure to electromagnetic (EM) field generated by cellular phones.Öğe Follow-up results in tuberculous cervical lymphadenitis(Cambridge Univ Press, 2006) Oktay, MF; Topcu, I; Senyigit, A; Bilici, A; Arslan, A; Cureoglu, S; Yildirim, MObjective: To investigate the efficacy of medical antituberculous treatment in patients with tuberculous cervical lymphadenitis (TCL). Methods: In the period 1996-2002, 73 TCL patients were reviewed and the results of clinical and laboratory testing were documented. The efficacy of a four-drug chemotherapy regimen was investigated. Results: Purified protein derivatives (PPD) skin test results were positive in 58 (79 per cent) patients. Chest X-rays revealed changes consistent with tuberculosis in nine (12.3 per cent) patients. The mean duration of medical treatment was 10.04 months. In follow-up evaluation, 14 (20 per cent) patients were considered suspicious for resistant TCL and total excision of all nodes was performed. Histopathology confirmed TB in only 10 of these cases. Conclusion: The high incidence of residual disease in our study indicates that medical treatment (at least nine months of four combined antituberculous drugs) did not seem to be effective. If lymphadenopathy persists, total surgical excision of lymph nodes should be the treatment of choice.Öğe Occupational safety: Effects of workplace radiofrequencies on hearing function(Elsevier Science Inc, 2004) Oktay, MF; Dasdag, S; Akdere, M; Cureoglu, S; Cebe, M; Yazicioglu, M; Topcu, IBackground. The effects of radio frequency (RF) and microwave radiation on humans have been the subject of continuous investigation. Clinical investigations related to occupational RF/microwave exposure have been reported by investigators (1). Since one of the major groups occupationally exposed to RF and microwave radiation includes those working, in radio broadcasting and TV transmitter stations. this study investigates whether RF affects auditory systems of people exposed to RF. Methods. The study is carried out with people working in radio broadcasting stations and living in employee residential houses close to the broadcasting stations. All subjects in the control group were similar in age, work regime, socioeconomic status, and lack of experience in working with RF sources. Brainstem Evoked Response Audiometer (BERA) and Pure Tone Audiometry (PTA) were used to measure the effects of RF under investigation on hearing functions of the subjects. In BERA measurements, I-III, III-IV and I-V interpeak latencies were evaluated. In pure tone audiometric measurements, 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, 4000 Hz and 8000 Hz frequencies of hearing threshold were measured in subjects of experimental and control groups. Interpeak latencies and bone conduction hearing thresholds of subjects in the experimental group were compared with those of the control group. Results. BERA results showed that I-III, I-V and III-V interpeak latencies of people occupationally exposed to RF were not higher than subjects in control groups (p >0.05). Results of BERA indicated no statistically significant differences between exposure and control subjects. In audiometric evaluation, hearing threshold of people occupationally exposed to R-F were found higher than the control group subjects for frequencies of 4000 Hz and 8000 Hz in terms of bone and air conduction of right and left car (p <0.01). Conclusions. The results of traditional audiometer indicated that RF promotes sensorineural hearing loss and affects cochlea parts related to 4000 Hz and 8000 Hz. These findings may have immediate implications and considerations for work-place safety in order to provide an occupationally safe environment to employees working in such settings. (C) 2004 IMSS. Published by Elsevier Inc.Öğe Use of radial forearm free flap with palmaris longus tendon in reconstruction of total maxillectomy with sparing of orbital contents(Lippincott Williams & Wilkins, 2003) Askar, I; Oktay, MF; Kilinc, NNasal paragangliomas are extremely rare. The most adequate treatment is total excision. After surgical excision requiring total maxillectomy, there has been no ideal technique for reconstruction. A 47-year-old man was admitted to our clinic because of recurrent epistaxis, which lasted for 2 months. He was also suffering from nasal airway obstruction. The physical examination revealed a mass originating from the medial aspect of the middle turbinate of the right nasal cavity. It invaded the anterior maxillary wall and hard and soft palate. Endoscopic examination showed that the mass pushed the nasal septum to the left side and protruded into the nasopharynx. The mass was fleshy and had a rich capillary network. Conventional paranasal sinus radiographs were normal. Computerized tomography of the skull showed the mass protruding into the nasopharynx. A total maxillectomy was performed. Histopathological evaluation showed neoplastic tissue consisting of round, oval, or slightly elongated cells, altogether of a rather monomorphous appearance, tending to arrange themselves in clusters adjacent to or around capillary blood vessels. The blood vessels were numerous and branched. Reticulum staining showed a typical Zellballen arrangement of the neoplastic cells to provide a firmer basis for the diagnosis of paraganglioma. To reconstruct the total maxillectomy defect, a radial forearm free flap with the palmaris longus tendon was elevated to inlay the nasal cavity and the oral cavity and to suspend the ocular globe. The flap was placed into the defect, and the palmaris longus tendon was medially and laterally anchored to the periosteum of the frontal bone to suspend the ocular globe in the orbital cavity. One part of the skin island was used to close the defect of the nasal mucosal cavity, and the other part was used to repair the oral mucosal defect of the palate. Consequently, speech was considered near normal; the patient was able to eat an unrestricted diet and to retain both solid and liquid food inside the oral cavity without drooling, and there was no diplopia or enophthalmos. Six months later, porous polyethylene was inserted and fixed to the zygomatic bone with a miniplate and miniscrews to restore malar contour. No further procedure was believed to be necessary later on. Two years later, a satisfactory and functional esthetic result was obtained, providing an acceptable suspension of the ocular globe and filling of the total maxillectomy defect. We believe that a total maxillectomy is indicated if it is needed in nasal paragangliomas and that microsurgical repair with the composite radial forearm-palmaris longus free flap has several advantages: 1) it can offer en bloc reconstruction of the entire defect after a total maxillectomy in terms of good function and cosmesis; 2) it can repair mucosal defects; and 3) it can anchor and suspend the ocular globe in its original anatomical location, protecting against gravity through the sling effect of the palmaris longus tendon. The composite radial forearm-palmaris longus free flap has not been described previously for suspension of the ocular globe.
