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    Proliferating Tricilemmal Cyst: Case Report
    (Galenos Yayincilik, 2015) Dagli, A. Ferda; Akatli, Aysenur; Sahin, Nurhan; Ucer, Ozlem; Kilicarslan, Ahmet; Artas, Gokhan
    Proliferating trichilemmal cyst is slowly growing benign cutaneous adnexal tumor of the hair follicle. Proliferating trichilemmal cysts are seen usually on the scalp and in elderly women. We present pathological findings of 43 years-old female patient with scalp nodular lesion with the literature.
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    Value of Glut-1 and Koc Markers in the Differential Diagnosis of Reactive Mesothelial Hyperplasia, Malignant Mesothelioma and Pulmonary Adenocarcinoma
    (De Gruyter Open Ltd, 2013) Ucer, Ozlem; Dagli, Adile Ferda; Kilicarslan, Ahmet; Artas, Gokhan
    Objective: Malignant mesothelioma (MM) is a primary malignant tumor developing from mesothelial cells lining the serosal surfaces and particularly the pleura, and has a very poor prognosis. It may display a variety of histological patterns and has a wide spectrum of cytomorphological characteristics, causing problems in its differential diagnosis from lung adenocarcinomas and sometimes from benign mesothelial proliferations. Immunohistochemical examination is the most useful method for this distinction. In our study, we aimed to determine the value of glucose transporter isoform-1 (GLUT-1) and K homology domain-containing protein (KOC) markers in the differential diagnosis of reactive mesothelial hyperplasia, malignant mesothelioma and lung adenocarcinoma. Material and Method: Our study included 30 samples of malignant mesothelioma, 30 samples of pulmonary adenocarcinoma and 30 samples of reactive mesothelial hyperplasia selected from the archives of the Firat University Hospital's Pathology Department Laboratory. The samples were applied GLUT-1 and KOC markers by immunohistochemistry and the place of these markers in the differential diagnosis was examined. Results: GLUT-1 was found positive in 80% of malignant mesothelioma cases, 83.3% of adenocarcinoma cases and 6.6% of reactive mesothelial hyperplasia cases. KOC was positive in 83.3% of malignant mesothelioma cases, 76.6% of adenocarcinoma cases and 46.6% of reactive mesothelial hyperplasia cases. There was no statistically significant difference between malignant mesothelioma and lung adenocarcinoma cases in terms of the diffuseness and intensity of staining with GLUT-1, whereas a significant difference was established when these groups were compared with reactive mesothelial hyperplasia cases. However, the KOC staining diffuseness and intensity results were similar to those obtained with GLUT-1. Conclusion: In conclusion, GLUT-1 and KOC markers do not differentiate malignant mesotheliomas from pulmonary adenocarcinomas but can be useful in differentiating reactive mesothelial hyperplasia from malignant mesothelioma and lung adenocarcinoma.