Distant metastases from laryngeal and hypopharyngeal cancer.

A retrospective tumor registry analysis of patients with squamous cell carcinoma (SCC) of the larynx and hypopharynx who were treated with curative intent in the Department of Otolaryngology--Head and Neck Surgery at Washington University School of Medicine and Barnes Hospital between January 1971 and December 1991. In 2,550 patients, the mean age, sex and tumor differentiation did not affect the incidence of distant metastases. The overall incidence of distant metastases was 8.5% (217/2,550 patients) with the following distribution: glottis 4.4%, supraglottis 3.6%, subglottis 14%, aryepiglottic fold 16%, pyriform sinus 17% and posterior hypopharynx 17.6%. The overall 5-year disease-specific survival for distant metastases was 6.4%. Distant metastases were related to advanced local disease (T3 + T4), lymph node metastases at presentation (N+), tumor location (hypopharynx) and locoregional tumor recurrence (p < or = 0.028). A meta-analysis of variables which predispose to a higher incidence of distant metastases indicate that tumor location (hypopharynx > larynx), advanced primary disease (T3 + T4), regional disease (N+), locoregional recurrences, and advanced regional metastases (N2 + N3) are statistically significant. Copyright 2001 S. Karger AG, Basel