Clinical impact of using chemoradiotherapy as a primary treatment for hypopharyngeal cancer.

Eighty-eight patients with hypopharyngeal cancer who received chemoradiotherapy as the primary treatment between 1979 and 1997 were investigated. Forty-six patients who received surgery as the primary treatment were analyzed as a control group. There were no statistically significant differences regarding TN classification, tumor stage, tumor site, age or sex between the radiation and surgery groups. The 5-year cumulative survival rate of primary chemoradiotherapy was 47% and this did not differ significantly from that for the primary surgery group. The larynx was preserved in 74% of cases in the primary chemoradiotherapy group, a far better preservation rate than that in the surgery group. After primary chemoradiotherapy, complete remission (CR) was observed in 59% of cases and the average period of CR was 38 months. Among patients with residual tumor, a salvage operation was employed in 31 cases, 13 patients refused to receive surgery and 8 were inoperable. A salvage operation was performed in 35% of all cases and the 5-year cumulative survival rate was 50%. Based on the 5-year survival, primary CR, salvage and laryngeal preservation rates, we conclude that chemoradiotherapy is a good primary treatment for hypopharyngeal cancer.