Demirel B.G. | Koca R. | Tekin N.S. | Kandemir N.O. | Gün B.D. | Köktürk F.

Article | 2016 | Turkderm Deri Hastaliklari ve Frengi Arsivi50 ( 4 ) , pp.136 - 140

Background and Design: Classic Kaposi's sarkoma (CKS) is a rare disease, generally seen across Mediterranean and the Middle East region. It's an angioproliferative disorder associated with human herpes virus-8 infection. There is a few data on epidemiology and clinical characteristics among Turkish patients with CKS. This study aims to evaluate epidemiologic, clinical characteristics and treatment results in patients with the diagnosis of CKS in Zonguldak. Materials and Methods: We retrospectively evaluated the hospital records of patients with CKS who attended the dermatological and venereal diseases department between 2003 and 201 . . .4. Seventy-four patients were included in this study. Demographic and clinical characteristics, applied treatments and responses to treatments were evaluated. Results: During the eleven year examination period, 74 CKS patients have been diagnosed in the dermatology clinic. The prevalence of CKS among dermatologic patients was found to be 0.02%. Patient age at diagnosis ranged from 33 to 90 years (mean: 70.2±11.7). Fifty-two patients were male (70.3%) and 22 patients were female (29.7%). Multiple nodules were the most frequently seen clinical forms and the distal lower extremity was the most common site of involvement (80.6%). According to the CKS staging system, it was observed that 47 patients (62.7%) were at stage 1, 11 patients (15.49%) at stage 2, eight patients (10.7%) at stage 3, and six patients (8%) were at stage 4. Treatment options were excision for 35.1% of patients (n=26), radiotherapy for 25.7% of patients (n=19), cryosurgery for 14.9% of patients (n=11), and chemotherapy for 10.8% of patients (n=8). Relapse was found to occur most commonly after excision (58.3%). Conclusion: Larger, multicenter studies are needed in order to determine the prevalence of CKS and characteristics of patients with CKS in our country. © Telif Hakk 2016 Deri ve Zührevi Hastaliklar Dernegi Daha fazlası Daha az

Kandemir N.O. | Barut F. | Gun B.D. | Keser S.H. | Karadayi N. | Gun M. | Ozdamar S.O.

Article | 2011 | Pathology and Oncology Research17 ( 4 ) , pp.843 - 851

The recent development of lymphatic endotheliumspecific immuno-indicators has given rise to research on the histogenesis of Kaposi sarcoma (KS), specifically focusing on its lymphatic root and differentiation. D2-40 is a new lymphatic marker that recognizes podoplanin and is easily applied to formalin-fixed paraffin-embedded human tissues. This study examined D2-40 immunoexpression in 178 classical KS lesions using immunohistochemical methods. D2-40 immunoexpression was also examined in 63 non-KS soft tissue lesions to test the reliability of D2-40 monoclonal antibody in the pathological diagnosis of KS. D2-40 immunoreactivity was d . . .etected at all of the KS lesions and in lymphangioma and nonneoplastic lymphatic endothelium. There was no significant relationship between the extent of D2-40 staining and histopathological stage;however, there was a positive correlation between the staining intensity and histopathological stage in KS cases. D2-40 immunoreactivity was detected at all histopathological stages of KS and may be added to the routine immunohistochemical panel used for the differential diagnosis of KS. Widespread D2-40 protein expression is evidence of a lymphatic origin or the differentiation of neoplastic cells in KS, and D2-40 expression increases with tumor progression. © Arányi Lajos Foundation 2011 Daha fazlası Daha az

Kandemir N.O. | Barut F. | Gün B.D. | Tekin N.S. | Keser S.H. | Özdamar T.O.

Article | 2012 | Diagnostic Pathology7 ( 1 ) , pp.843 - 851

Background: In this study, the clinical and morphological features of vesiculobullous lesions observed in Kaposi sarcoma are analyzed, and the features of bullous Kaposi sarcoma cases are emphasized.Methods: A total of 178 biopsy materials of 75 cases diagnosed as classic-type cutaneous Kaposi sarcoma were reviewed. Twenty-five cases showing vesiculobullous features were included in the study. Tumor, epidermis, dermis, and clinical data regarding these cases was evaluated.Results: Vesicular changes were observed in 21 (12%) out of 178 lesions of the 75 cases, while bullous changes were present in only 4 (2%). In all cases where vesi . . .cular and bullous changes were detected, tumor, epidermis, and dermis changes were similar. All cases were nodular stage KS lesions, whereas hyperkeratosis and serum exudation in the epidermis, marked edema in the dermis, and enlarged lymphatic vessels and chronic inflammatory response were observed.Conclusions: Our findings suggest that changes in vascular resistance occurring during tumor progression are the most important factors comprising vesiculobullous morphology.Virtual slides: The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/1646397188748474. © 2012 Kandemir et al.; licensee BioMed Central Ltd Daha fazlası Daha az