Cd10 For The Distinct Differential Diagnosis Of Basal Cell Carcinoma And Benign Tumours Of Cutaneous Appendages Originating From Hair Follicle

Aims: Differential diagnosis between the group of trichoadenoma, trichofolliculoma, trichoepithelioma, trichoblastoma and basal cell carcinoma has been creating some difficulties for the pathologist and the clinicians, particularly in the presence of small specimens. Material and methods: A total of 30 cases of benign tumours of cutaneous appendages originating from the hair follicle and 30 cases of basal cell carcinoma were retrieved from the archives deposited from 2004 to 2008. Results: The expression of CD10 in both tumours was graded from [0] to [2+] for each case. The immunoreactivity of CD10 was comparatively examined among the groups and each subgroup. The stromal CD10 immunopositivity of benign tumours of cutaneous appendages originating from the hair follicle was stronger than the other (p = 0.003) regarding both the numerical and the degree of expression. However, peripheral CD10 of basal cell carcinoma was stronger than the other for [1+] immunopositivity (p = 0.03). It was exact opposite for [2+] (p = 0.013). Besides, central CD10 immunopositivity and CD10 reactivity for the subgroups was not significant. Conclusions: CD10 may be very useful for the differential diagnosis between them particularly in the small and superficial biopsies and it may be even a life-saving method in some selected cases.Wo

Effects of Renin-Angiotensin-Aldosterone System Blockade on Chlorhexidine Gluconate-Induced Sclerosing Encapsulated Peritonitis in Rats

Sclerosing encapsulated peritonitis (SEP) is a rare complication of long term peritoneal dialysis. Renin-angiotensin-aldosterone system (RAAS) may play a role in the development of peritoneal fibrosis in CAPD patients. We aimed to evaluate the effect of aliskiren, valsartan, and aliskiren + valsartan therapy on SEP. The study included 30 Wistar albino rats which were divided into five groups: I (Control) SF solution i.p.; II (CG group) chlorhexidine gluconate i.p.; III aliskiren oral plus CG i.p.; IV valsartan oral plus CG i.p.; and V aliskiren oral, valsartan oral and CG i.p. On the twenty-first day, all of the rats were sacrificed. All of the groups were analyzed in terms of peritoneal thickness, degree of inflammation, vasculopathy, neovascularization and fibrosis. Also, the parietal peritoneal tissue samples were evaluated for matrix metalloproteinase 2 (MMP-2) using the ELISA method. Peritoneal thickness and fibrosis scores were lower in the valsartan group compared to the CG group (P 0.05). Tissue MMP-2 levels were significantly higher in the CG group compared other groups (P < 0.05). There were no statistically significant differences between the aliskiren, valsartan and aliskiren + valsartan groups according to the tissue MMP-2 levels. Due to the antifibrotic properties of valsartan, it is thought to be a possible choice to prevent SEP development. We found no positive impact of aliskiren or aliskiren + valsartan combination compared to valsartan alone

A Retrospective Multicenter Evaluation of Cutaneous Melanomas in Turkey

Background: We defined melanoma distribution in a large series of Turkish patients and evaluated the prognostic parameters of melanomas. Materials and Methods: A total of 1574 patients' data was retrospectively collected at 18 centers in Turkey. Demographic characteristics were questioned and noted. Prognostic parametres were evaluated based on sentinel lymph node involvement. Results: Mean age was 56.7 (4-99) years. While 844 (53.6%) cases were male, 730 (46.4%) cases were female. One thousand four hundred forty-seven (92%) cases were invasive melanoma and 127 (8%) cases were in-situ melanoma. The most common histopathological form was the superficial spreading melanoma (SSM) which was found in 549 patients (37.9%). It was followed by nodular melanoma in 379 (26.2%), acral lentiginous melanoma (ALM) in 191 (13.2%) and lentigo maligna melanoma in 132 (9.1%), respectively. On univariate analysis, lymphovascular invasion (p= 6/mm(2) mitosis (p=0.005), satellite formation (p=0.001) and gender (p=0.03) were found to be associated with sentinel lymph node positivity. Regression was associated with sentinel lymph node negativity (p=0.017). According to multivariate analysis, lymphovascular invasion and tumor thickness were significant independent predictive factors of SLN positivity. Patient age, tumor localization, precursor lesions, lymphocytic infiltration and neurotropism were not related with sentinel lymph node involvement. Conclusions: In this retrospective analysis, it was found that the prevalence of SSM is at a lower rate while the prevalence of ALM is at a higher rate when compared to western countries. According to Breslow index; most of the melanoma lesions' thickness were greater than 2 mm, corresponding Clark IV. Vascular invasion and tumor thickness are the most important factors for sentinel lymph node involvement.WoSScopu