Fine needle aspiration biopsy cytology of renal oncocytoma
Nguyen, G.K.; Amy, R.W.; Tsang, S.
Acta Cytologica 29(1): 33-36
1985
ISSN/ISBN: 0001-5547 PMID: 3855584 Document Number: 244029
The cytologic appearance of cells in fine needle aspiration biopsies of two cases of well-differentiated renal oncocytoma (grade 1) and one case of moderately well differentiated renal oncocytoma (grade 2) is presented. In grade 1 renal oncocytoma, the tumor cells were seen mainly singly or in small clusters; they were round or polygonal, with abundant granular and eosinophilic cytoplasm and small, regular, round, hyperchromatic nuclei. Aspirated cells from the grade 2 renal oncocytoma were seen mainly in large sheets. These cells were polygonal, with eosinophilic, granular cytoplasm and slightly irregular vesicular nuclei with prominent nucleoli.