Cytologic appearance of pigmented villonodular synovitis. A case report.
BACKGROUND
Pigmented villonodular synovitis (PVNS) is a benign neoplasm of large joints. It may follow a locally aggressive course. The cytologic features of this neoplasm have not been characterized fully.


METHODS
A 70-year-old male presented with a lump in the left ankle joint. The histopathologic diagnosis was pigmented villonodular synovitis. Review of the cytologic smears revealed clusters of round and ovoid, bland-looking cells along with siderophages and binucleated and multinucleated giant cells.


CONCLUSIONS
When interpreted in the clinical context, fine needle aspiration cytology may render a correct preoperative diagnosis of pigmented villonodular synovitis.
Gupta
Sanjiv
S
Department of Pathology, Cancer Hospital and Research Institute, Gwalior, M.R., India. sanjiv_1961@usa.net
Mishra
Ravi Shankar
RS
D000368:Aged; D000843:Ankle Joint / Q000473:pathology*; D001707:Biopsy, Needle; D015726:Giant Cells / Q000473:pathology; D006801:Humans; D008297:Male; D011300:Preoperative Care; D013582:Synovial Fluid / Q000166:cytology*; D013586:Synovitis, Pigmented Villonodular / Q000473:pathology*