Polycystic kidney disease--autopsy review from the period 1987-2007

INTRODUCTION: Polycystic kidney disease is an inherited kidney disease that affects both kidneys and it is characterized by diffuse replacement of renal parenchyma by thousands of microcysts. In time, renal insufficiency develops. There are two forms of PKD: ADPKD, which is detected in adults (children are rarely affected), and ARPK, which is detected in neonates (later presentations do occur, but rarely). OBJECTIVE: The aim of this study was to analyse frequency of polycystic kidney disease, clinical data and morphological characteristics. METHOD: At the Institute of Pathology, School of Medicine, Belgrade, there were detected 33 cases of ADPKD and 20 cases of ARPKD between 1987 and 2007. RESULTS: There were no differences between incidence of ADPKD in males and females. Average age of patients with ADPKD was 52 years. In 20 (66.7%) cases of ADPKD there were neither extrarenal cysts nor extrarenal manifestations detected. In other 13 cases, we detected extrarenal cysts: hepatic cysts in 8 cases, pancreatic cysts in 5 cases. In two cases, hepatic cysts were associated with intracranial (arachnoid cysts) and extracranial aneurysms. The most frequent cause of death in patients with ADPKD was end-stage disease. ARPKD affects more often male children compared to female. 70% of children with ARPKD were male. The mean age of patients with ARPKD was 1 month. 5 patients (40%) had hepatic fibrosis. The most frequent cause of death was respiratory insufficiency (75%). In 25% of patients, the cause of death was sepsis and renal insufficiency. CONCLUSION: Morphological and clinical manifestations of the analysed cases of both types of PKD are fairly consistent with literature data. Better knowing of aethiopathogenesis of PKD will facilitate early diagnosis, based on clinical and morphological characteristics and better management of the disease

Immunohistochemical analysis of gamma catenin in Wilms' tumors

The aim of our study was to investigate the expression of γ-catenin in normal kidney and in Wilms' tumor by immunohistochemistry and to correlate the results with tumor stage, histological type, and prognostic group. We investigated 28 cases of Wilms' tumor, 2 Wilms' tumor metastases in lungs, and 1 specimen of normal renal tissue. Expression of γ-catenin was detected in 14 cases. There was a weak inverse relationship between γ-catenin expression and tumor stage. Expression of γ-catenin was detected in various histologic types of Wilms' tumor, but there was no statistically significant correlation, except in cases with diffuse anaplasia that were negative. In 2 metastatic cases and in the case of bilateral Wilms' tumor γ-catenin immunostaining was not observed Our findings suggest an absence of strong correlation between the loss of γ-catenin and unfavorable outcome

Inteligentni sistem za automatsko upravlјanje punjenja kalupa metalom

Inteligentni sistem za automatsko upravlјanje punjenja kalupa metalom, Tehničko rešenje, korisnik: Koncern „Farmakom MB“, Inudistrijski kombinat „Guča“ ad, Guča. Prihvaćeno od Naučno-nastavnog veća Fakulteta tehničkih nauka u čačku, Univerziteta u Kragujevc

Prognostic value of survivin expression in Wilms tumor

Purpose: To determine survivin expression patterns in Wilms tumor (WT) and compare it with the expression in normal renal tissue. Also, to analyse cytoplasmic and nuclear survivin expression in relation to histological type, prognostic group and tumor stage. Methods: Immunohistochemical expression of survivin was analysed in 59 cases of primary WT and in 10 normal kidney specimens, taken from the same patients, but distant from the tumor. Results: 51 out of 59 cases of WT (86.44%) showed decreased cytoplasmic survivin expression and 4 out of 59 cases of WT (6.78%) showed nuclear overexpression of survivin. There was statistically significant difference in the frequency of decreased cytoplasmic expression of survivin in individual components of WT (p=0.005). Decreased cytoplasmic expression of survivin in epithelial, blastemal and stromal component was found significantly more often in low stage WT compared to high stage WT (Fisher exact test, p=0.0002, p=0.002, p=0.002, respectively). There was no statistically significant difference in the frequency of survivin nuclear overexpression between different stages of WT (Fisher exact test, p=0.564), histological types (Fisher exact test, p=0.915), or between different prognostic groups (Fisher exact test, p=1). Conclusion: Decreased survivin cytoplasmic expression or nuclear overexpression may be related to favorable prognosis of WT