J Korean Soc Pediatr Nephrol.  1999 Oct;3(2):130-144.

Incidence of Chronic Pathologic Nephrotoxicity of Cyclosporine A in Pediatric Nephrotic Syndrome

• Kim JH
• Kim PK
• Jeong HJ
• Choi IJ

Abstract

Pigmented villonodular synovitis is a destructive, fibrohistiocytic proliferation producing innumerable villous and nodular synovial protrusions. Its common locations are knee, ankle, foot, and hip. Although histologic feature of this tumor is well known, there have been few reports on the fine needle aspiration cytology findings. We report the cytologic features of a biopsy-proven case of pigmented villonodular synovitis. The patient was a 21-year-old male with a mass of the right knee for 2 years. On fine needle aspiration cytology, the aspirates was composed of abundant mononuclear histiocytic cells, singly and in clusters, multinucleated giant cells, and hemosiderin pigments.

Keyword

Electron microscopy; Fine needle aspiration cytology; Malignant melanoma

MeSH Terms

Ankle
Biopsy, Fine-Needle
Cyclosporine*
Foot
Giant Cells
Hemosiderin
Hip
Humans
Incidence*
Knee
Male
Melanoma
Microscopy, Electron
Nephrotic Syndrome*
Synovitis, Pigmented Villonodular
Young Adult
Cyclosporine
Hemosiderin