Browsing by Author "Egrilmez, M"

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    Surgical implications of anatomical landmarks on the lateral surface of the mastoid bone
    Aslan, A; Mutlu, C; Celik, O; Govsa, F; Ozgur, T; Egrilmez, M
    The aim of this study was to examine the relationships of the surgical landmarks on the lateral surface of the mastoid bone with the landmarks in a deeper location. Simple mastoidectomy was carried out without drilling over the linea temporalis inferior (LTI) on 20 adult temporal bones. The suprameatal spine, i.e., Henle spine (HS), variants were noted. Morphometric measurements were performed between these surgical landmarks, and their variations with pneumatization or HS types were evaluated. Three types of HS were identified: triangular, crest, absent. The HS-lateral semicircular canal distance was 15 mm on average and longer in bones with a triangular HS than a crest type HS (16.4 vs. 14.3 mm). The LTI was found to be located on average 4.7 mm inferior to the middle fossa dural plate (MFD). The LTI-MFD distance had a tendency to be longer in bones without an HS than with a crest type of HS (5.9 vs. 3.9 mm). Chorda tympani emerged from the facial nerve at the stylomastoid foramen in five specimens (25%). This anatomical organization was not correlated with the type of HS. Korner's septum (KS) was identified in nine bones (45%). It was present in eight of 16 (50%) bones with good pneumatization. No tendency for the existence of KS was found for any specific type of HS. This study confirms that the mastoid antrum is located 15 mm deep to the lateral surface of the mastoid bone. It should be expected to be longer in bones with a triangular HS. In addition, the MFD is located on average 5 mm above the LTI, which could be useful information for beginners or inexperienced surgeons. The ear surgeon should anticipate that the MFD might be longer in bones without an HS.
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    Radiologic anatomy of the sphenoid sinus for intranasal surgery
    Mutlu, C; Unlu, HH; Goktan, C; Tarhan, S; Egrilmez, M
    Endoscopic surgery of the sphenoid sinus can present the operator with a considerable challenge. The relationship of the sphenoid sinuses, in particular on the lateral wall, to the carotid artery, optic nerve, as well as the other anatomic structures, is of utmost importance. Surgical complications can occur because of a lack of orientation during dissection. To avoid the complications or lessen, somehow, the rate of complications, some described the technique consisting of the opening of the sphenoid sinus ostium medially. Me studied 69 axial high resolution computed tomography (HRCT) of temporal bones to reveal the relationship of sphenoid sinus to the vital structures and to get some measurements in the sphenoid sinus. The lateral distance from the sphenoid ostium revealed that the lateral distance was about the distance between both ostea. We consider that in selected cases the dissection might be carried out laterally from the sphenoid ostium for safe enlargement of the ostium and approaching the sinus.
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    Osteochondroma of the posterior nasal septum managed by endoscopic transnasal transseptal approach
    Unlu, HH; Unlu, Z; Ayhan, S; Egrilmez, M
    A case of osteochondroma of the posterior nasal septum is presented. A 57-year-old female patient presented with a history of bilateral nasal obstruction for 20 years. To the best of our knowledge, this is the second reported case of an osteochondroma of the nasal septum. It was treated by endoscopic transnasal transseptal surgery.
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    Facial growth after middle turbinate resection: An experimental study in the rabbit
    Egrilmez, M; Mutlu, C; Unlu, HH; Celik, O
    Background: The aim of this study was to determine the effects of total middle turbinate resection on midfacial growth through a morphometric analysis on an animal model. Methods: Twenty eight male New Zealand white rabbits were used. The animals were divided into three groups: group 1, elevation and relocation Of the nasal bone was performed; group 2, concha resection was performed: group 3, control group with no surgical procedure. The surgery was done at 8-10 weeks of age and the skull of each subject was sampled as they reached maturity. The determined distances then were measured by using landmarks identified oil skull. The supplied data were evaluated by using the Mann-Whitney U test. Results: Deviation of the nasal axis to the opposite side of the resected concha and an increase in the width of nasal bone were observed only in group 2. In group 1, all increase nasal bone length and zygomaticonasal distances was determined ill both the operated and the unoperated sides of nasal bones. Conclusion: This animal experiment showed that operations on the nasal bone or concha resection affected the midfacial growth ill rabbits. The effects of middle turbinate resection to midfacial development should be evaluated by additional studies. Vile recommend only limited, conservative surgical procedures 017 the middle turbinate. saving all the vital mucosa, periosteum. and bone.
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    Voice analysis and videolaryngostroboscopy in patients with Parkinson's disease
    Yücetürk, AV; Yilmaz, H; Egrilmez, M; Karaca, S
    Parkinson's disease (PD) is clinically characterized by a resting tremor, bradykinesia, cogwheel phenomenon, rigidity, disorder of postural reflexes and especially changes in voice and speech. We studied 30 PD patients who were treated with dopamine and 20 normal subjects as the control group. The parameters of vocal fold edges, glottal closure, vertical levels of cords, amplitude of vibration, mucosal wave, vibratory behavior, phase symmetry, ventricular folds and movements, periodicity, arytenoids and thick mucous were evaluated by videolaryngostroboscopy. The Unified Parkinson's Disease Rating Scale was applied to the patient group. The voices of the patients were evaluated by the Dr.Speech-4 and Spectra-PRO computer programs. Maximum phonation time, fundamental frequency, amplitude and the harmonic-to-noise ratio were recorded and compared with those of the control group. The abnormal videolaryngostroboscopic findings were more frequent in the PD group (70% versus 45%; P<0.05). Voice analysis showed significant differences in the parameters such as maximum phonation time, maximum fundamental frequency, the frequency range and the harmonic-to-noise ratio. We thought that these methods and parameters yielded sufficient information for diagnosis and follow-up of vocal function in patients with PD.
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    The intracranial complication of acute isolated sphenoid sinusitis
    Unlu, HH; Aslan, A; Goktan, C; Egrilmez, M
    Acute isolated sphenoid sinusitis is a rare, potentially destructive entity, which has indistinct clinical findings and non-specific symptoms. Hence, it can be easily be misdiagnosed. We present and discuss a case of an isolated sphenoiditis with intracranial complication. (C) 2002 Elsevier Science Ireland Ltd. All rights reserved.