[Synovial sarcoma of the nasal cavity. A case report].

Synovial sarcoma is a rare tumour found in soft tissue; it is a mesenchymal spindle cell tumour that is not related to the synovial membrane. This tumour has a low incidence, the most frequent place of occurrence being the lower extremities in young adults. Synovial sarcoma of the head and neck accounts for 3-5% of sarcomas in this anatomical region. The treatment of choice for synovial sarcoma of the head and neck is complete surgical excision of the tumour mass followed by adjuvant radiotherapy.