Immunohistochemical expression of E-Cadherin and β-catenin in prostate adenocarcinoma and benign prostate hyperplasia

Disruption of the E cadherin mediated complex due to loss or depletion of E cadherin results in epithelial abnormalities and serious developmental impairment in various tissues and organs. The present study aims to determine E cadherin and β catenin expression in patients diagnosed with benign prostatic hyperplasia (BPH) and prostate carcinoma (PCa) based on Gleason scores and investigate the association of these proteins with PSA levels and Gleason scoring. Immunohistochemical staining for E cadherin and β catenin was performed in 59 patients diagnosed with PCa and 30 patients with BPH. Mean E cadherin expression was 3.00 in patients diagnosed with BPH and 2.38±0.5 in patients with PCa, with a statistically significant difference between these values (p [Med-Science 2020; 9(3.000): 530-4

The shrinkage effect of formalin on renal cell carcinoma: Does it change the stages?

Objective: To determine the shrinkage effect of formalin on renal cell carcinoma. Method: The retrospective study was conducted from October to November 2020 at Tekirdag Namil kemal University, Turkey and comprised all radical and partial nephrectomy cases performed by a single surgeon in a single clinic between January 2014 and August 2020. Preoperative images and postoperative pathology were reviewed by the same clinician. Preoperative longest tumour diameter of radiological images and pathological specimens measured after formalin fixation shrinkage were compared, and the effect of the difference between the two measurements on the circumference of the tumour was examined. The formalin related shrinkage rates of renal tumours according to the tumour size and the tumour types were also analysed. Data was analysed using SPSS 20. Results: Of the 101 cases, 58(57.4%) were of radical and 43(42.6%) of partial nephrectomy. Also, there were 77(76.2%) renal cell carcinoma cases, 22(21.8%) benign renal tumours and 2(1.9%) had other malignant tumours. There were 59(58.4%) males and 42(41.6%) females with an overall mean age of 58.1±12,2 years (range: 30-82 years). The mean radiological size of the renal tumours was 55.3±30.4mm and it was 52.9±31.6mm at pathological examination (p>0.05). Conclusion: Formalin fixation of tissues post-surgery caused a difference between the radiological and pathological dimensions. Though the difference was no significant, under-staging due to the shrinkage post-surgery should be considered. Key Words: Renal tumours, Tissue shrinkage, Formalin, radiological dimension, Pathological dimension. ---Continu