Pigmented villonodular synovitis of the hip mimicking soft-tissue sarcoma: a case report.
Pigmented villonodular synovitis is a rare and benign but potentially locally aggressive disease that should be considered in younger patients who present with monoarticular joint symptoms and pathology. We present a 30-year-old Sudanese woman with a huge mass arising from the right hip joint. A multimodality radiological approach to investigation and diagnosis is demonstrated and discussed. Histopathological examination of the resected specimen confirmed the diagnosis of pigmented villonodular synovitis with the mass consisting of a proliferation of fibrohistiocytic cells, abundant haemosiderin, foamy histiocytes, and occasional giant cells. The patient made a good recovery, with mobility aided by arm crutches and a hip abduction brace.
Lee
M Ks
MK
Department of Radiology, St Vincent's Hospital, Fitzroy, Melbourne, Australia. mkslee@optusnet.com.au
Choong
P Fm
PF
Smith
P J
PJ
Powell
G J
GJ
Slavin
J L
JL
Schlicht
S M
SM
D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006621:Hip Joint; D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis*; D012509:Sarcoma / Q000175:diagnosis*; D013586:Synovitis, Pigmented Villonodular / Q000175:diagnosis*