Head and neck manifestations of distant carcinomas.

Metastatic tumors to the head and neck from distant carcinomas are rare lesions that epitomize the "zebras." They represent a diagnostic and therapeutic challenge for clinicians and health providers. These lesions usually rank low in the differential diagnosis list, but a history of cancer should prompt clinicians about the possibility of a metastatic lesion from a distant carcinoma. The presence of these lesions usually represents a poor prognosis. The surgeon's role in treating these lesions is to improve or maintain the patient's quality of life, taking into consideration the overall prognosis.