학술논문
A case of pigmented villonodular synovitis of the knee successfully diagnosed by fine-needle aspiration of the joint fluid / 関節液の吸引細胞診にて診断しえた膝関節色素性絨毛結節性滑膜炎の 1 例
Document Type
Journal Article
Author
Source
日本臨床細胞学会雑誌 / The Journal of the Japanese Society of Clinical Cytology. 2013, 52(5):478
Subject
Language
Japanese
ISSN
0387-1193
1882-7233
1882-7233
Abstract
We report a case of pigmented villonodular synovitis (PVNS) of the knee diagnosed in a 69-year-old woman. The fine-needle aspiration smear of the joint fluid showed loose aggregates of mononuclear cells relatively rich in cytoplasm with bland nuclei containing a single nucleolus. Hemosiderin-containing cells and multinucleated cells were also observed. Histopathological study of the resected synovial tumor confirmed the diagnosis of PVNS.The characteristic cytological features of PVNS are as follows : i) aggregates of bland mononuclear cells, and ii) presence of hemosiderin-containing mononuclear cells and multinucleated cells. Recognition of these features can facilitate the cytodiagnosis of PVNS.