Invasion and erosion of bone in nodular synovitis (histiocytic xanthomatous granuloma, xanthoma, giant-cell tumour, benign synovioma) are found fairly frequently in circumscribed lesions of the tendon sheaths of hands and feet. Fletcher and Horn (1951) in particular called attention to this. Bone involvement in diffuse forms, namely “ pigmented villonodular synovitis, bursitis and tenosynovitis...

Intraarticular synovial fibroma is extremely rare with only 14 known cases reported in the literatures. Descriptions and illustrations about the imaging features are also limited. We hereby present a case of synovial fibroma in the knee joint which shares similar imaging features and clinical presentations with localized pigmented villonodular synovitis (PVNS). Therefore, it is important that s...

We report the 2-year follow-up results of a hemiarthroplasty in a 29-year-old patient with pigmented villonodular synovitis (PVNS) with extra-articular extension and severe bony destruction. The patient presented with diffuse pain and swelling of the right shoulder for several years. Radiographs showed severe osteolytic lesions in the humeral head and neck, greater tuberosity, and a small osteo...

Pigmented villonodular synovitis is an uncommon benign tumor-like proliferative lesion with an undetermined origin. Involvement of the temporomandibular joint is uncommon. Although pigmented villonodular synovitis is a benign lesion, it can grow with an aggressive pattern, and it extends extra-articularly in most of the reported cases, about one-third of them exhibiting intracranial involvement...

Pigmented villonodular synovitis (PVNS) is a benign but locally aggressive and destructive disease originating in the synovial membranes. It is a proliferative disorder of unknown etiology. Involvement of the temporomandibular joint (TMJ) is very rare. Computed tomography clearly reveals areas of lytic bone erosion and sclerosis, and also clearly defines the extent of the tumor which is the foc...

Pigmented villonodular synovitis is a rare, benign, but potentially locally aggressive disease that should be considered in younger patients who present with monoarticular joint symptoms and pathology. We present the case of a 33-year-old woman with a mass arising from her right hip joint that was examined using a multimodal radiological approach. Because her clinical presentation mimicked that...