Metin Yilmaz

Metin Yilmaz
Gazi University

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76
Publications
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762
Citations
Citations since 2017
23 Research Items
306 Citations
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060

Publications

Publications (76)
Article
ZET Amaç: Tonsillektomi ve adenotonsillektomi, pediatrik ve erişkin yaş grubunda en sık uygulanan Kulak Burun Boğaz (KBB) ameliyatlarındandır. Ameliyat sonrasında kanama en sık ve ciddi komplikasyondur. Bu çalışmada kliniğimizde tonsillektomi ameliyatı yapılmış olan hastalarda ameliyat sonrası kanamaya neden olabilecek faktörlerin incelenmesi ve ka...
Article
Background: Diabetes mellitus (DM) could influence various organs, especially the eyes, kidneys, nerves, heart, and blood vessels, and finally results in many irreversible disease-related complications. In this paper, the association between reflux, swallowing, and voice symptoms in patients with DM and the possible effect of diabetic complication...
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Purpose There is still no widely-accepted local agent proven to be effective in nerve regeneration. We aimed to investigate the effects of chitosan gel and platelet-rich plasma Materials and methods Electrophysiological measurements were performed before and immediately after injury. The injured nerves were covered with spongostan impregnated with...
Article
Purpose To investigate the effect of a combination indirect voice therapy approach on the management of vocal nodules in the pediatric population. Methods A prospective cohort study with thirty children (24 males and 6 females; mean age 8.8 ± 2.2) with a diagnosis of vocal fold nodule (VFN) was conducted. All participants were included in an 8-wee...
Article
Background As the duration of diabetes progresses, various disease related complications might occur in patients. The main goal of this paper is to compare acoustic and aerodynamic measures of patients with type 2 diabetes mellitus (T2DM) with a control group of healthy subjects. Methods A total of 91 subjects, 51 individuals with type 2 diabetes...
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Objective: To evaluate the long-term balance outcomes of vestibular nerve section (VNS) and labyrinthectomy (L) operations. The indirect outcomes will be the correlation of objective and subjective test results and an analysis of anterior-posterior versus medial-lateral computerized posturography (CP) scores. Methods: This retrospective study ev...
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Background/Aim: We aimed to compare the size of upper airway soft tissue structures between obstructive sleep apnea (OSA) patients and normal controls by using magnetic resonance imaging (MRI). Methods: Sixty-eight subjects available with neck MRI and polysomnography (PSG) were retrospectively included in the study. The subjects were divided into t...
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The aim of this paper is to emphasize the importance of careful history taking in patients with dysphagia. Dysphagia is defined as the difficulty in forming or moving the foods and liquids safely from the mouth to the stomach. Traditionally, swallowing can be divided into four stages: oral preparatory stage, oral stage, pharyngeal stage, and esopha...
Article
Objective: To draw attention to the changes in the surgical method and indications of the Caldwell-Luc (CL) operation in the endoscopic era. Method: The patients who underwent the CL operation in the last seven years were included in the study. All operations were performed by otolaryngologists. The CL operation was implemented as two different typ...
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Amaç: Brankial yarık anomalileri (BYA), en sık karşılaşılan konjenital boyun patolojileridir ve genellikle boynun lateralinde karşımıza çıkarlar. Genellikle benign karakterde lezyonlar olup, tedavide ilk seçenek cerrahi eksizyondur. Bu çalışmada, kliniğimizde BYA nedeniye opere olan hastalar analiz edilerek, bulgularımızın literatür eşliğinde değer...
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Beyin omurilik sıvısı (BOS) rinore, nazal mu-koza ile subaraknoid boşluk arasında kafa tabanı, dura ve araknoid tabakalarını içeren bir defekte bağlı olarak gelişen ve burundan berrak renkli akıntıyla ka-rakterize bir klinik durumdur. Travma, BOS rinore vakalarında en sık saptanan etiyolojik sebeptir ve has-taların yaklaşık %70-80'inde görüldüğü bi...
Chapter
Image-guided sinus surgery (IGSS) is a type of computer-assisted surgical navigation technique. It is also termed computer-aided surgery (CAS) as well as computer-assisted navigation (CAN). Compared to its first description in the 1990s, it is now widely applied by the rhinologists worldwide. While it is not a substitute for surgical expertise or a...
Article
Although costal cartilage autograft has versatile usage, harvesting the graft is an invasive procedure with potential risks for complications. Therefore, it is important to make every effort to minimize these risks. Moreover, sculpting costal cartilage to the desired shape is challenging and time-consuming because of the natural rigidity. This stud...
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Introduction: Sinonasal inverted papilloma is noted for its high rate of recurrence. Staging systems aid to reduce recurrence and avoid excessive surgeries by guiding the selection of the optimal surgical approach. Objective: To evaluate the effectiveness of different endoscopic approaches in inverted papilloma by assessing tumor origin site and...
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The relationship between objective vestibular tests and subjective vestibular tests is a controversial topic. In this study, to contribute to this issue, the vestibulo-ocular reflex features and their relationship with balance perception at long-term follow-up in vestibular neurectomy (VN) and total labyrentectomy patients were evaluated. Prospecti...
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Extra-cardiac rhabdomyomas are rare benign soft tissue tumors accounting for 2% of sk eletal muscle neoplasms. Oral cavity and pharynx are the most common sites for rhabdomyomas origina ting from the head and neck region. The presenting symptom for head and neck rhabdomyomas may change according to tumor size and location. The main treatment modali...
Article
Objectives: Childhood voice disorders have increased in recent years reduce not only communication of the child, but also; the quality of life by affecting the socio-emotional state. Methods: In the study, it is aimed to test validity and reliability of Pediatric Voice Related Quality of Life Survey (PVRQOL)'s Turkish adaptation. A total of 223...
Article
Background/aim: Isolated sphenoid sinus-derived lesions are rare and generally present with unclear symptoms. We are sharing our experience to be mindful of such lesions in differential diagnosis and to help accomplish successful treatment while avoiding revisions and complications.Materials and methods: Data from patients who underwent isolated sp...
Article
Nasal obstruction mainly caused by adenoid hypertrophy in children affects the craniofacial growth and development process, and the craniofacial deviations and/or differences reported in the children are very similar to those in the adults with obstructive sleep apnea syndrome (OSAS). The authors aimed to look for relationships of the linear cranio...
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The localization of the obstruction is crucial in determining the appropriate surgical treatment for obstructive sleep apnea syndrome (OSAS); ApneaGraph has been introduced for diagnosis of OSAS and localization of airway obstruction level. This study aims to evaluate the diagnostic value of ApneaGraph for both clinical staging and site of obstruct...
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Synovial sarcoma is a soft tissue sarcoma especially encountered in the lower extremities. The infratemporal fossa is quite a rare location. Since it is a closed location, combined approaches and multidisciplinary planning always need to be considered. This case emphasizes the high-grade character of synovial sarcoma, which causes it to recur often...
Article
Objectives: This study aims to examine the relationship between nasal pathologies and positional (PP) obstructive sleep apnea (OSA) or nonpositional (NPP) OSA. Patients and methods: A total of 44 male OSA patients (mean age 48.0±6.8 years; range 31 to 60 years) suffering from nasal obstruction were retrospectively evaluated for nasal obstruction...
Article
Synovial sarcomas are rare soft tissue sarcomas that typically seen in the peri- articular region and predominantly located in the extremities. It most commonly affects young adults of the second to fourth decade. Head and neck synovial sarcomas are uncommon and carry a poor prognosis. In the head and neck region, tumor is localized laterally in th...
Article
Mutational falsetto is a temporary adolescent voice. Voice therapy support in mutational falsetto helps the individual to regain a healthy voice. Speech Range Profile (SRP) is considered to be a method requiring less time in the pretherapy and posttherapy evaluations of voice patients. The purpose of this study was to determine the differences betw...
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This study aims to evaluate phonetogram data of the students in the department of music who passed the entrance exam. The phonetogram data of 44 individuals with a good voice quality in the department of music and age-matched individuals who were not trained in the field of music or not involved in music amateurish as the control group were compare...
Article
Obstructive sleep apnea syndrome (OSAS) is a common sleep disorder and related to multiple conditions that cause mortality in adults. In the present study, reliability of SleepStrip, a disposable screening device for detection of OSAS, is tested. In this prospective, nonrandomized double-blinded single cohort study at an academic health center, the...
Article
Polysomnography is currently considered as the gold standard for the diagnosis of obstructive sleep apnea syndrome (OSAS). But high expense and the backlog of the sleep centers have resulted in a search for an alternative method of diagnosis. The aim of this study is to assess the efficacy and reliability of Watch PAT as an alternate option in OSAS...
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The most common malignant diseases of the head and neck in the adolescent period are acute leukemia, Hodgkin's disease, non-Hodgkin's lymphoma, nasopharyngeal carcinoma, and thyroid carcinoma. Although renal cell carcinoma (RCC) may metastasize in the cervical lymph nodes, both occurrence and presentation as a neck mass are rare in the childhood pe...
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We describe the case of a 24-year-old man who underwent open septorhinoplasty for the treatment of progressive nasal disfigurement caused by a nasal hump. Postoperative histopathology of the resected hump revealed that it was an osteochondroma. The patient showed no evidence of recurrence during 2 years of follow-up. To the best of our knowledge, t...
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Turkiye Klinikleri J E.N.T.-Special Topics 2014;7(1):49-56 ÖZET: Boyun diseksiyonları metastatik boyun hastalığının veya bazı kronik lenfadenitlerin tedavi- sinde önemli bir yere sahiptir. Boyun, hassas ve karmaşık yapısı nedeniyle cerrahi komplikasyon- lara açık bir bölgedir. Cerrahi prosedürler uygulanmaya devam ettiği müddetçe komplikasyonlar da...
Article
In this study, we aimed to determine and compare the pharyngocutaneous fistula (PCF) rates in patients undergoing primary total laryngectomy (TL) or those undergoing salvage TL following radiotherapy (RT)/chemoradiotherapy (CRT) failure. Between January 2006 and January 2012, medical records of 91 male patients (mean age 61.0+10.3 years; range 36 t...
Article
Although the metastatic rate of cutaneous squamous cell carcinoma (SCC) is low, detailed examination for the presence of micro- and macrometastasis of lymph nodes is crucial in avoiding the devastating outcomes and in planning appropriate treatment. Cutaneous SCC of the head and neck can spread to parotid lymph nodes, cervical lymph nodes, or both,...
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Objective: The aim of this study was to describe a case of advanced juvenile nasopharyngeal angiofibroma from our practice and discuss the controversies of surgical treatment. Method: We present a 13-year-old boy who underwent external resection of advanced juvenile nasopharyngeal angiofibroma at the Gazi University medical faculty otorhinolaryngol...
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Several inflammatory and allergic disorders have been reported to correlate with interleukin-16 (IL-16). IL-16 is a highly potent chemotactic and chemoattractant molecule for eosinophils. Nasal polyposis (NP) has an inflammatory basis, and eosinophilia is a common finding in polyp tissue. In this study, we aimed to determine serum IL-16 levels in N...
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This is a prospective randomized study conducted in a group of children who underwent two methods of tonsillectomy: thermal welding or cold knife tonsillectomy. Parameters, such as postoperative pain scores, intraoperative blood loss, operation time, and postoperative bleeding rates, were analyzed to find out which technique is better. Ninety-one c...
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Leukoplakia is a nonspecific clinical term used to describe a mucosal white patch or plaque that cannot be easily scraped off. Leukoplakia of vocal cord represents a chronic inflammation or exposure to irritants which can also stimulate development of precancerous conditions or cancer. This study aimed to determine clinical and histopathological ch...
Article
Paragangliomas are very rarely seen in the nose, paranasal sinuses and nasopharynx. The development of paraganglioma concurrently with nasopharyngeal carcinoma in the same region has not been reported to date. In this study we reported a 59-years-old a female case of nasopharyngeal carcinoma who underwent radiotherapy six years ago and got the diag...
Article
Primary nasopharyngeal Kaposi sarcoma is extremely rare, as only 1 case has been previously reported in the literature. We report a new case, which occurred in a 37-year-old man with a known history of acquired immune deficiency syndrome (AIDS). The patient presented with complaints of recurrent epistaxis and postnasal hemorrhage. Endoscopic examin...
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Castleman's disease (CD) is a very rare disorder characterized by non-neoplastic growths in lymph nodes in any body regions, although over 60% of cases are located in the mediastinum. The head and neck is the second most commonly involved site, with up to 14% of cases. Of these, nearly 85% are located in the neck. These lesions rarely occur in the...
Article
Objective: We aimed to assess effect of intratympanic dexamethasone treatment on hearing in the patients who did not respond to conventional systemic treatment of idiopathic sensorineural hearing loss (ISHL). Materials and Methods: Fourteen consecutive patients with ISHL who did not respond to conventional parenteral treatment (methyl-prednisolone...
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The objective of our study was to assess the association of eNOS4 and eNOS296 polymorphisms of endothelial nitric oxide synthase (eNOS) gene with obstructive sleep apnea syndrome (OSAS). Forty-eight patients with OSAS and 181 healthy volunteers were included in the study. Genotype analyses were performed for eNOS intron 4 VNTR and exon 7, Glu298Asp...
Article
Objective; To discuss the incidence, clinical presentation, diagnosis and management of extracranial complications of chronic otitis media (COM). Materials & Methods; In this retrospective study conducted between 1963 and 2007, 97 extracranial complications of COM were included, Intracranial complications of COM and complications of acute otitis me...
Article
The aim of this study was to determine safety, pain perception, and the factors that may affect pain perception in patients undergoing certain otorhinolaryngologic procedures under local anesthesia with sedation. Prospective clinical study. Tertiary care academic medical centre. Two hundred thirteen patients operated on under local anesthesia with...
Article
Full-text available
Schwannomas may rarely arise from the facial nerve and most commonly occur in the intratemporal part of the nerve. Extratemporal facial nerve schwannomas are extremely rare. Intraparotid schwannomas usually develop in adults and only one pediatric case has hitherto been reported. Herein, we reported the second case of facial nerve schwannoma in a 7...
Article
To assess regrowth potential of the tonsils following partial tonsillectomy performed by using radiofrequency. Follow-up results of 42 children (aged from 1 to 10 years) who consecutively had partial tonsillectomy with radiofrequency due to obstructive sleep apnea or snoring were evaluated for regrowth of the tonsils. Regrowth of the remaining tons...
Article
Objective: To compare effectiveness of four different treatment protocols in idiopathic sudden hearing loss (ISHL). Patients and Methods: The patients with ISHL were divided into four groups according to the treatment protocols applied; Group 1 (n=67) was treated with rheomacrodex, pentoxyphiline, heparin, papaverine, famotidine, and methylpredniso...
Article
This study aimed to assess cochlear functions in Behçet's disease and rheumatoid arthritis (RA) using otoacoustic emission testing (OAE), which objectively assesses outer hair cells in the cochlea. Patients with Behçet's disease (n = 16) and RA (n = 11) as well as 20 controls were tested using pure tone audiometry and transiently evoked (TEOAEs) an...
Article
Crohn's Disease (CD) is a chronic granulomatous inflammatory bowel disease which may also involve the extraintestinal organs such as joints, liver, skin and perianal tissue. Involvement of the aerodigestive tract is quite rare in CD. We report a 16-year-old girl with CD and nasal perforation as an extraintestinal manifestation of the disease.
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GABA(B)R (gamma-amino butyric acid B receptor)-mediated neurotransmission has been implicated in the pathophysiology of a variety of neuropsychiatric disorders. GABA(B)R1 gene variants were identified by single-strand conformation analysis. The nucleotide exchanges cause a substitution of alanine to valine in exon 1a1 (Ala20Val), a substitution of...
Article
Treatment of nasal septal perforations which decrease quality of life is a surgical challenge with variable success rates. Numerous surgical methods have been proposed for closure of perforations. The technique described in this article, i.e. closure of the perforation with an upper lateral cartilage mucoperichondrial flap through an external septo...
Article
The objective of this study was to assess significance of insulin receptor substrate (IRS) -1 gene polymorphism (Gly972Arg) at codon 972 in obstructive sleep apnea syndrome (OSAS). Using the polymerase chain reaction technique, the codon 972 polymorphism of the IRS-1 gene was analyzed in the DNA obtained from leukocytes of 50 patients and 143 healt...
Article
The aim of this study was to present our technique of posterior fossa surgery and to evaluate whether cerebellar retractors are needed. Since March 1989, more than 500 surgeries were performed through retrosigmoid approach, and our surgical technique was described. The data were evaluated whether or not cerebellar retractors were used in the operat...
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Sphenochoanal polyp is a rare entity originating from the sphenoid sinus. It may be confused with an antrochoanal polyp on anterior rhinoscopy. Computerized tomography and nasal endoscopy have contributed to an increase of accuracy in the diagnosis of these masses. Simple polypectomy that leaves some part of the polyp inside the sphenoid sinus carr...
Article
MESNA is a synthetic sulfur compound that produces mucolysis by disrupting disulfide bonds. This study aimed to address indications and technique of MESNA application in otologic surgery, especially in retraction pockets and adhesive otitis media. MESNA application was performed in 42 ears of 39 patients. The diagnoses were retraction pockets fixed...
Article
Understanding the genetic basis of hearing loss is important because almost 50% of profound hearing loss are caused by genetic factors and more than 120 independent genes have been identified. In this review, after a brief explanation of some genetic terms (allele, heterozygosis, homozygosis, polymorphism, genotype and phenotype), classification of...
Article
Our purpose was to evaluate efficiency of immediate repair of the tympanic membrane perforation after intentional removal of the long-lasting tubes. This study was done in 36 ears of 27 patients who had either Goode-T or Paparella-II silicone tube insertion due to chronic OME or ROM and tube removal. Only the ears in which tube removal was performe...
Article
Our purpose was to evaluate whether postoperative improvement by radiofrequency (RF) volumetric tissue reduction (RFVTR) correlated with a preoperative topical vasoconstrictor drop test (TVDT) in subjects with chronic nasal obstruction secondary to inferior turbinate hypertrophy (ITH). This study was a prospective and unblinded clinical trial. We i...
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Full-text available
Tuberculosis can affect every organ, most importantly the lungs, and worldwide it is the leading cause of death attributable to a single infectious agent. Tuberculous involvement of the neck is also possible. Patients mostly present with masses or draining fistulas in the neck, which are mostly located in the posterior cervical, submandibular, and...
Article
To compare ultrastructure of the chorda tympani nerve by light and electron microscopy in patients with otosclerosis and chronic suppurative otitis media. Comparative prospective study. Tertiary care, referral medical center. The tympanic segments of chorda tympani nerves were collected for ultrastructural investigation in 20 cases with chronic sup...
Article
In this study, our purpose was to evaluate results of our experience with bone cement repair of ossicular discontinuity between the incus and stapes and between the malleus and stapes. Medical records of patients who underwent surgery for chronic otitis media between March 2000 and December 2002 were evaluated retrospectively. Fifty-seven patients...
Article
We aimed to evaluate the results of our experience in vestibular nerve sectioning (VN), which was performed using combined retrosigmoid-retrolabyrinthine approach. Medical records of 280 patients who were consecutively operated on for incapacitating peripheral vertigo were retrospectively evaluated, and 210 patients who completed 2 years follow-up...
Article
The objective of this study was to evaluate the results of endoscope-assisted acoustic neuroma surgery in posterior fossa approach. Between 1996 and 2002, 60 consecutive patients with acoustic neuroma were operated via the retrosigmoid suboccipital approach. Standard 4-mm sinus endoscopes at different angles were used during the surgeries either fo...
Article
Our purpose was to evaluate performance of the children on pure tone audiometry (PTA), and role of age, concentration level (CL) and otitis media with effusion (OME) in testing process. This study was prospectively performed on 100 consecutive children referred for PTA between 24 and 120 months of age. After the audiologists' decision on test techn...
Article
Although our understanding of the mechanisms of vertigo and pathophysiology of vertiginous disorders has increased, diagnosis and treatment of various vertiginous diseases is challenging. The objective for the treatment of a vertiginous disease is to eliminate the underlying pathology either with maneuvers or drugs. In vertiginous diseases, surgery...
Article
No surgery is free of complications varying from common minor problems to very unexpected and severe ones. In the case presented here, unilateral paralysis of the muscles of the tongue and ipsilateral vocal cord paralysis due to a lesion of the 10th and 12th cranial nerves occurred following a septorhinoplasty that was performed under endotracheal...
Article
The primary treatment modality for cerebellopontine angle (CPA) tumors is surgery. In the postoperative period, collection of subdural hygroma (SDH) is a rarely encountered complication. This paper presents a 58-year-old male patient who underwent surgery for right acoustic neuroma and developed a SDH postoperatively. Subdural hygroma, even though...
Article
To assess the rate of thyroid gland invasion and the need for thyroidectomy in advanced laryngeal and hypopharyngeal carcinomas that require total laryngectomy. Between 1994 and 2001, 129 total laryngectomy with ipsilateral hemithyroidectomy and 14 total laryngopharyngectomy with total thyroidectomy operations were performed for primary squamous ce...
Article
In a rabbit model of squamous cell carcinoma of the tongue, we monitored histopathologic changes and assessed the effect of selenium against carcinogenesis. The study included 36 male albino New Zealand rabbits. To induce squamous cell carcinoma of the tongue, 9,10-dimethyl-1,2-benzanthracene (DMBA)-acetone solution was applied three times a week f...
Article
In order to evaluate lymphatic metastasis to the supraretrospinal recess (SRSR) in laryngeal squamous cell carcinoma (SCC), we separately dissected SRSR lymph nodes and submitted them to pathological examination. Fifty-three lateral neck dissections (LNDs), 2 radical neck dissections (RNDs), and 19 modified RNDs were performed in 49 previously untr...

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