title: Giant synovial cyst of the calf and thigh in a patient with granulomatous synovitis.
abstract: A giant synovial cyst with granulomatous synovitis was removed from the thigh and calf in an 80-year-old woman. The lesion included necrotizing, epitheloid cell granulomata with Langhans' type giant cells. Chest X-ray, tuberculin testing, cultures for Acid Fast bacilli, as well as aerobic, anaerobic and fungal cultures were all negative. The treatment consisted of synovectomy and total knee arthroplasty with an uneventful recovery. A giant calf cyst, usually associated with rheumatoid arthritis, but in this situation, noted in granulomatous synovitis seems not to have been reported previously.
mesh_terms: D006099:Granuloma / Q000150:complications / Q000473:pathology; D006801:Humans; D007717:Knee / Q000473:pathology; D013581:Synovial Cyst / Q000150:complications* / Q000473:pathology; D013585:Synovitis / Q000150:complications* / Q000473:pathology; D013848:Thigh