Synovial sarcoma: a rare tumor of larynx.

Synovial sarcoma is a soft tissue sarcoma of unknown histogenesis and occurs predominantly in the lower extremities of young adults. The head and neck is a relative rare location. There are about 10 cases with laryngeal localization in the literature. We present a 24 year-old male with an endolaryngeal mass. Incisional biopsy and the hemilaryngectomy material revealed a biphasic synovial sarcoma. One year later a local recurrence occurred. Tumor excision and neck dissection were performed. Radiotherapy was added. Six months later lung metastases was discovered on thoracic CT. The patient received chemotherapy for 6 courses. The metastases responded well to chemotherapy and the patient is now alive without tumor on radiological and clinical examination after 3.5 years of follow-up.