PMID- 22076171 OWN - NLM STAT- MEDLINE DCOM- 20120302 LR - 20211021 IS - 1936-2625 (Electronic) IS - 1936-2625 (Linking) VI - 4 IP - 7 DP - 2011 TI - Small oncocytic papillary renal cell carcinoma in diabetic glomerulosclerosis. PG - 708-12 AB - Histologic and immunohistochemical features of oncocytic papillary renal cell carcinoma (RCC) have not been fully elucidated. The author herein report a case of oncocytic papillary RCC (OPRCC). A 71-year-old man with diabetes mellitus and diabetic nephropathy was found to have a small right renal tumor by CT. He had been treated with hemodialysis for chronic renal failure for 10 years. A nephrectomy was performed. Grossly, a small (1.5cm) encapsulated yellow tumor was found in the kidney. Histologically, the tumor was completely encapsulated, and consisted entirely of atypical oncocytes arranged in a diffuse papillary structure with fibrovascular cores. The oncocytes showed grade 3 atypia and pseudostratification. A few mitotic figures were seen, and psammoma bodies, foamy macrophages, and hemosiderin were scattered. Histochemically, the tumor cells were positive for colloidal iron, and negative for mucins (Alcian blue/PAS). Immunohistochemical results of the tumor were as follows: alpha-methylacyl-coenzyme A rasemase (AMACR) +++, vimentin +++, cytokeratin (CK) 18 +++, CD10 +++, S-100 protein +, MUC1 ++, MUC2 ++, MUC5AC ++, MUC6 ++, panCK Cam5.2 +, CK7 +, CK8 +, CK14 +, CK19 +, CK20 +, p53 +, HepPar1 +, CD68 +, platelet-derived growth factor-alpha (PDGFRA) +, PanCK AE1/3 -, PanCK WSS -, PanCK MNF115 -, CK 35BE12 -, CK5/6 -, EMA -, desmin -, smooth muscle antigen -, alpha-fetoprotein -, CEA -, estrogen receptor -, progesterone receptor -, HER2 -, p63 -, and KIT -. Ki67 labeling was 6%. These results suggest that OPRCC can express colloidal iron, low molecular weight CKs, S100 protein, MUC1, MUC2, MUC5AC, MUC6, p53, PDGFRA, and HepPar1. FAU - Terada, Tadashi AU - Terada T AD - Departments of Pathology, Shizuoka City Shimizu Hospital Shizuoka, Japan. piyo0111jp@yahoo.co.jp LA - eng PT - Case Reports PT - Journal Article DEP - 20111016 PL - United States TA - Int J Clin Exp Pathol JT - International journal of clinical and experimental pathology JID - 101480565 RN - 0 (Biomarkers, Tumor) SB - IM MH - Aged MH - Biomarkers, Tumor/analysis MH - Carcinoma, Papillary/chemistry/*etiology/pathology/surgery MH - Carcinoma, Renal Cell/chemistry/*etiology/pathology/surgery MH - Diabetic Nephropathies/*complications/therapy MH - Humans MH - Immunohistochemistry MH - Kidney Neoplasms/chemistry/*etiology/pathology/surgery MH - Male MH - Nephrectomy MH - *Oxyphil Cells/chemistry/pathology MH - Renal Dialysis PMC - PMC3209611 OTO - NOTNLM OT - Oncocytic papillary renal cell carcinoma (OPRCC) OT - immunohistochemistry EDAT- 2011/11/15 06:00 MHDA- 2012/03/03 06:00 PMCR- 2011/10/16 CRDT- 2011/11/15 06:00 PHST- 2011/08/13 00:00 [received] PHST- 2011/10/09 00:00 [accepted] PHST- 2011/11/15 06:00 [entrez] PHST- 2011/11/15 06:00 [pubmed] PHST- 2012/03/03 06:00 [medline] PHST- 2011/10/16 00:00 [pmc-release] PST - ppublish SO - Int J Clin Exp Pathol. 2011;4(7):708-12. Epub 2011 Oct 16.