Immunohistochemical profiles of normal mesothelium and histiocytic/mesothelial hyperplasia (HMH) are unknown. A 19-year-old man was treated by thoracoscopic resection of bullae of left lung. Histologically, there were cell proliferative foci composed of round cells without significant atypia (histiocyte, mesothelium and T-lymphocytes). The cell proliferative foci were patch-like, and no invasiv...

nephrogenic adenoma is a rare benign lesion of bladder that may be confused with malignant lesions. there is a strong relation with urinary tract irritation and intravesicle instrumentations. nephrogenic adenoma was initially thought to originate from urothelial metaplasia; however, no solid proof is available. we present a case of 55-year-old lady with urinary problem. cystocopic examination s...

Undifferentiated carcinoma of the pancreas with osteoclast-like giant cells is an exceptionally rare malignancy, fewer than 100 cases reported to date. While histological features this entity have been well described, cytological diagnosis can present a challenge. This case report describes fine needle aspirate from heterogenous pancreatic mass in 75-year-old man. The smears revealed singularly...

This study provides detailed staining results for 225 prostate adenocarcinomas, including 150 Gleason score 8, 9, and 10 adenocarcinomas with cytokeratins (CKs) 7, 20, 5/6, and 17, prostate-specific antigen (PSA), prostatic acid phosphatase (PAP), carcinoembryonic antigen (CEA), WT1, thyroid transcription factor-1 (TTF-1), and villin. CK7 was reactive in 112 adenocarcinomas (49.8%). The percent...

Serrated lesions in the colorectum include all epithelial neoplastic lesions, which show a sawtooth-like morphology crypts. Classification systems nosologically divide colon serrated polyps into three different categories, primarily emphasizing their micromorphological growth pattern and cytodifferentiation: (1) hyperplastic polyps, (2) sessile adenomas/polyps (3) traditional adenomas. Overall,...