title: Tenosynovial fibroma arising from the posterior cruciate ligament.
abstract: In a 16-year-old girl, a locking and effusion of the left knee occurred without a history of any specific trauma. Arthroscopic examination of the knee revealed a soft tissue mass arising from the posterior cruciate ligament. The mass was completely excised, arthroscopically. The microscopic diagnosis was tenosynovial fibroma, a new entity reported by Chung and Enzinger in 1979. After a follow-up study of 20 months, the patient was asymptomatic.
mesh_terms: D000293:Adolescent; D001182:Arthroscopy; D005260:Female; D005350:Fibroma / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007719:Knee Joint; D008023:Ligaments, Articular / Q000473:pathology*; D013710:Tendons / Q000473:pathology*