PMID- 19941365 OWN - NLM STAT- MEDLINE DCOM- 20100915 LR - 20161125 IS - 1097-0339 (Electronic) IS - 1097-0339 (Linking) VI - 38 IP - 7 DP - 2010 Jul TI - Imprint cytologic features of chromophobe renal cell carcinoma morphologically resembling renal oncocytoma: is this an oncocytic variant of chromophobe renal cell carcinoma? PG - 509-13 LID - 10.1002/dc.21256 [doi] AB - In this article, we report a case of 76-year-old woman with a rare variant of chromophobe renal cell carcinoma (CRCC). Cytologically, renal tumor cells obtained from imprint cytology were isolated or arranged in small or monotonous population cells with abundant granular cytoplasm. Neoplastic cells showed regular and uniformly shaped small round to oval nuclei with smooth margin. Binucleation was occasionally seen. Immunocytochemically, the cytoplasm of almost all tumor cells was diffusely positive for vimentin and CK 7. Histologically, the cytoplasm was abundant granular eosinophilic and composed of solid cell sheets or pseudoacinar structures. Additionally, tumor cells showed infiltration into some small renal veins covered by a single layer of endothelial cells. These cytological and histological features entirely resembled those of renal oncocytoma. We performed the analysis of von Hippel-Lindau (VHL) gene mutation, 3p loss of heterozygosity (LOH), and fluorescence in situ hybridization (FISH) on chromosomes 7, 10, 13, 17, and 21. As a result, we confirmed monosomy of chromosomes 7, 10, 13, and 17, and these findings corresponded to the diagnosis of CRCC. Finally, we present a case of renal tumor morphologically resembling renal oncocytoma but genetically showing CRCC. We suggest that oncocytic variant of CRCC may actually exist. CI - (c) 2009 Wiley-Liss, Inc. FAU - Yamaguchi, Tadanori AU - Yamaguchi T AD - Department of Cytopathology, Ayabe City Hospital, Ayabe, Kyoto, Japan. yamaguchi.t@ayabe-hsp.or.jp FAU - Kuroda, Naoto AU - Kuroda N FAU - Imamura, Yoshiaki AU - Imamura Y FAU - Hes, Ondrej AU - Hes O FAU - Michal, Michal AU - Michal M FAU - Sima, Radek AU - Sima R FAU - Nakayama, Keizou AU - Nakayama K FAU - Sato, Nodoka AU - Sato N LA - eng PT - Case Reports PT - Journal Article PL - United States TA - Diagn Cytopathol JT - Diagnostic cytopathology JID - 8506895 RN - EC 2.3.2.27 (Von Hippel-Lindau Tumor Suppressor Protein) RN - EC 6.3.2.- (VHL protein, human) SB - IM MH - Adenoma, Oxyphilic/genetics/*pathology MH - Aged MH - Carcinoma, Renal Cell/genetics/*pathology MH - Chromosomes, Human/genetics MH - Cytological Techniques/*methods MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Kidney/*pathology MH - Kidney Neoplasms/genetics/*pathology MH - Loss of Heterozygosity/genetics MH - Mutation/genetics MH - Von Hippel-Lindau Tumor Suppressor Protein/genetics EDAT- 2009/11/27 06:00 MHDA- 2010/09/16 06:00 CRDT- 2009/11/27 06:00 PHST- 2009/11/27 06:00 [entrez] PHST- 2009/11/27 06:00 [pubmed] PHST- 2010/09/16 06:00 [medline] AID - 10.1002/dc.21256 [doi] PST - ppublish SO - Diagn Cytopathol. 2010 Jul;38(7):509-13. doi: 10.1002/dc.21256.