Myxomas of the head and neck.

Myxomas are benign mesenchymal tumors that occur rarely in the head and neck. When they do occur, they are prevalent in the jaws and occur less frequently in the subcutaneous tissues. We report ten new cases and review the clinical, structural, and behavioral characteristics of myxomas arising in various head and neck locations. All ages are affected. The most common initial complaint is the presence of a slow-growing mass. The sarcomas, especially liposarcomas and fibrosarcomas, rank high in the differential diagnosis of myxomas. These tumors are stubborn infiltrators. When a capsule is present, it is usually incomplete and insufficient to contain the tumor. Treatment is by wide surgical excision. The high recurrence rate previously reported is probably due to incomplete excision and is higher when enucleation or curettage are used. Long-term follow-up is mandatory since recurrences may develop several years after treatment.