two rare cases of extra-articular diffuse variant giant cell tumor of the tendon sheath are presented, at the elbow of a 68-year-old female and the foot of a 56-year-old male. both patients presented with a palpable masses and marginal excision was performed; histological sections confirmed the diagnosis of extra-articular giant cell tumor. no adjuvant therapy was administered. at the last foll...

BACKGROUND Pigmented villonodular synovitis (PVNS) is characterized by the presence of inflammation and hemosiderin deposition in the synovium. Two forms of PVNS distinguished in the literature are diffused and localized involvements. There are controversies in the literature about the surgical management of PVNS. We report our experience in the management of knee PVNS at a mean follow-up of 4 ...

This is an isolated case of a giant cell tumor originating from the synovium of the hip, consistent with Pigmented Villonodular Synovitis (PVNS) and associated with concurrent Femoroacetabular Impingement (FAI). There is a paucity of literature on this condition. This case report will add to the literature on hip pathology that may be treated using arthroscopic surgery.