RESUMO
Pigmented villonodular synovitis (PVNS) as well as tenosynovial giant cell tumor (TGCT) are both diagnosed and described in two forms, namely a localized and diffuse type. They form a diverse group of proliferative lesions in articular synovium and tendon sheaths. The inconsistent terminology impedes communication between patients, orthopedic surgeons, radiologists and pathologists, leading to misunderstandings and delaying treatment. In this paper, we present three cases of PVNS/TGCT (involving the fourth toe extensor tendon sheath, hip joint after resurfacing and flexor hallucis longus tendon sheath) together with suggestions regarding the unification of the terminology as well as diagnosis and treatment.
Assuntos
Articulação do Quadril/fisiopatologia , Membrana Sinovial/fisiopatologia , Sinovite Pigmentada Vilonodular/classificação , Sinovite Pigmentada Vilonodular/diagnóstico , Sinovite Pigmentada Vilonodular/terapia , Tendões/fisiopatologia , Terminologia como Assunto , HumanosAssuntos
Tumores de Células Gigantes/classificação , Neoplasias de Tecidos Moles/classificação , Sinovite Pigmentada Vilonodular/classificação , Terminologia como Assunto , Tumores de Células Gigantes/diagnóstico , Humanos , Neoplasias de Tecidos Moles/diagnóstico , Sinovite Pigmentada Vilonodular/diagnósticoRESUMO
Pigmented villonodular synovitis (PVNS) is a benign proliferative disorder of the synovial tissue, that usually affects the knee, ankle and other major joints. Involvement of the temporomandibular joint is, however, very rare. We describe a new case of recurrent PVNS arising from the temporomandibular joint that was classified as diffuse extra-articular type and was successfully treated surgically. The etiology and clinical features of PVNS are discussed and the previously reported cases in the literature are reviewed.
