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Öğe Mean Platelet Volume as a Potential Predictor of Cholesteatoma in Children(Lippincott Williams & Wilkins, 2016) Eryilmaz, Mehmet Akif; Derin, SerhanObjectives:Cholesteatoma is a chronic inflammatory clinical disorder, and it may cause hearing loss and various complications due to its destructive nature. Mean platelet volume (MPV) is a prothrombotic and proinflammatory marker. The aim of this study is to investigate predictive values of MPV, neutrophil-to-lymphocyte ratio, erythrocyte distribution width, and platelet lymphocyte ratio in cholesteatomatous or noncholesteatomatous pediatric chronic otitis media.Methods:In this study, the authors retrospectively analyzed 24 patients with cholesteatomatous chronic otitis media, 9 patients with noncholesteatomatous chronic otitis media, and 36 age- and sex-matched healthy controls. Cholesteatomatous and noncholesteatomatous chronic otitis media groups were compared with each other, and with controls for WBC, MPV, erythrocyte distribution width, neutrophil-to-lymphocyte ratio, and platelet lymphocyte ratio.Results:Mean platelet volume was significantly lower in patients with cholesteatoma (8.171.22 fL) compared with the control group (10.42 +/- 0.87 fL) (P<0.001). Region of conversion curve analysis showed that the cutoff level of 9.5 fL for MPV was an independent predictor for cholesteatoma with a high sensitivity (86%) and specificity (84%). Cholesteatomatous and noncholesteatomous chronic otitis media patients were similar for other parameters studied.Conclusion:Mean platelet volume may be used as a fast-to-obtain, reliable, and inexpensive marker with a high predictive level to indicate cholesteatoma in children.Öğe Olfactory Dysfunction in -Thalassemia Major Patients Treated with Iron-Chelating Agents(Sage Publications Inc, 2017) Derin, Serhan; Erdogan, Selvet; Sahan, Murat; Azik, Mehmet Fatih; Derin, Hatice; Topal, Yasar; Topal, HaticeOcular and ophthalmologic adverse effects may occur in patients with -thalassemia major (BTM) treated regularly with blood transfusions and iron-chelating agents. We hypothesized that olfactory dysfunction may be present in this patient population. We aimed to investigate olfactory dysfunction in patients with BTM and to determine etiologic factors. A total of 43 patients with BTM were included in the study. Forty-three subjects without nasal complaints, history of facial trauma, or nasal surgery were included as the controls. All participants had nasal endoscopy. The use of iron-chelating agents by patients with BTM and their duration of use were recorded, as well as hemoglobin and ferritin levels. The Sniffin Sticks test (SST) was used to assess olfactory function, comparing results between the BTM and control groups. The correlations of SST scores with the other study parameters were analyzed. Eight (18.6%) of 43 patients in the BTM group and none of the subjects in the control group had hyposmia (p < 0.001). Older age, low hemoglobin level, and longer use of deferoxamine were found to be correlated with olfactory dysfunction. Olfactory dysfunction can occur in patients with BTM treated with iron-chelating agents. The results suggest that screening for olfactory function should be part of the routine follow-up of patients with BTM.Öğe Olfactory Dysfunction in ? Thalassemia Major Patients Treated With Iron-Chelating Agents(Sage Publications Inc, 2019) Derin, Serhan; Erdogan, Selvet; Sahan, Murat; Azik, Mehmet Fatih; Derin, Hatice; Topal, Yasar; Topal, HaticeOcular and ophthalmological adverse effects may be seen in beta-thalassemia major (BTM) patients treated with regular blood transfusions and iron-chelating agents. We hypothesized that olfactory dysfunction may be present in this population. In this study, we aimed to investigate olfactory dysfunction in patients with BTM and determine the etiological factors. A total of 43 patients with BTM were included in the study. Forty-three patients without any nasal complaints, history of facial trauma, or nasal surgery were included as the controls. All participants had nasal endoscopy. The iron-chelating agents used, their duration of use, as well as hemoglobin and ferritin levels of the BTM patients were recorded. Sniffin' Sticks test (SST) was used to assess olfactory functions, and BTM and control groups were compared for the results. The correlations of SST scores with the other study parameters were analyzed. Eight (18.6%) of 43 patients in the BTM group had hyposmia while none of the patients in the control group had hyposmia (P < .001). Older age, low-hemoglobin level, and longer use of deferoxamine were found to be correlated with olfactory dysfunction. Olfactory dysfunction may be seen in BTM patients treated with iron-chelating agents. The results of this study suggest that screening for olfactory function may be needed in routine follow-up of BTM patients.Öğe A Pediatric Case of Ramsay Hunt Syndrome(Hindawi Ltd, 2014) Derin, Serhan; Derin, Hatice; Sahan, Murat; Caksen, HuseyinRamsay Hunt syndrome (RHS) is characterized by facial paralysis, inner ear dysfunction, periauricular pain, and herpetiform vesicles. The reported incidence in children is 2.7/100,000. The pathogenesis involves the reactivation of latent varicella zoster virus (VZV) in the geniculate ganglion of the facial nerve. The recovery rate is better in children than in adults. This paper discusses a 12-year-old girl with a rare case of peripheral facial paralysis caused by RHS and reviews the literature.Öğe Pediatric Sialadenosis Due to Valproic Acid(Lippincott Williams & Wilkins, 2017) Derin, Hatice; Derin, Serhan; Oltulu, Pembe; Ozbek, Orhan; Caksen, HuseyinSialadenosis is a rare entity characterized by bilateral diffuse, painless swelling of the parotid glands. Its etiology is not clear; however, it may occur due to adverse effects of some drugs. To our knowledge, sialadenosis due to valproic acid has not been reported in the literature up to date in any child. In this article, the authors presented a child who developed sialadenosis due to valproic acid, and improved after stopping use of the drug.Öğe Post-traumatic refractory multiple canal benign paroxysmal positional vertigo: a case report(2016) Dündar, Mehmet Akif; Arıcıgil, Mitat; Eryılmaz, Mehmet Akif; Arbağ, Hamdi; Derin, SerhanBenign paroxysmal positional vertigo (BPPV) is the most prevalent form of peripheral vertigo and is seen in a significant number of patients who present at neurology and ear, nose, and throat clinics. Various maneuvers may be used to determine the affected canal based on observation of specific nystagmus signs, and may also be used for treatment. Multiple canal pathology can make diagnosis and treatment more difficult. Presently described is case of BPPV with multiple canal pathology and traumatic etiology that was resistant to treatment.Öğe Sudden bilateral hearing loss after organophosphate inhalation(Kare Publ, 2016) Dundar, Mehmet Akif; Derin, Serhan; Aricigil, Mitat; Eryilmaz, Mehmet AkifSudden bilateral hearing loss are seen rarely and the toxic substance exposure constitutes a small part of etiology. A Fifty-eight-year-oldwoman admitted to our clinic with sudden bilateral hearing loss shortly after chlorpyrifos-ethyl exposure. Otolaryngologic examination findings were normal. The patient had 40 dB sensorineural hearing loss (SNHL) on the right ear and 48 dB SNHL on the left ear. Additional diagnostic tests were normal. The conventional treatment for sudden hearing loss was performed. On the second week following organophosphate (OP) exposure the patient's hearing loss almost completely resolved. OP's are heavily used in agriculture and should be taken into consideration as an etiologic factor in sudden hearing loss. Copyright (C) 2016 The Emergency Medicine Association of Turkey. Production and hosting by Elsevier B.V. on behalf of the Owner. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
