[Laryngeal leiomyosarcoma]. / Leiomiosarcoma laríngeo.

Laryngeal leiomyosarcoma is a highly infrequent malignancy, with less than fifty reports in the scientific literature world-wide. Diagnosis is based on immunohistochemistry and, occasionally, on electron microscopy techniques, making it difficult to be done preoperatively. We report a new case of laryngeal leiomyosarcoma, with an up-to-date review of the differential diagnosis and the treatment strategy.