Distant metastasis in malignancies of the head and neck.

It is a well known fact that disease in head and neck cancer remains confined above the clavicle in a majority of cases for a considerable length of time. The causes of death in head and neck cancer patients are known to be due to lymph node metastasis, fungation, asphyxia, cachexia, invasion of major vessels and infection. Distant metastasis occurs late in the disease. However, many reports have appeared in the literature which indicate a high incidence of distant metastasis in head and neck malignancies. Merino et al. (1977), in a clinical study, have indicated an incidence of 10.9 per cent. Studies based on autopsy findings, however, quote a much higher figure (30 per cent, Papac, 1984; 57 per cent, Gowen and Dessuto Nagy, 1963). Dennington and Caster (1980) reported that at least seven per cent of patients with head and neck cancer have distant metastasis when first seen. The present study was designed to find out the incidence of distant metastasis in our head and neck cancer patients.