Multiple Primary Tumors in Patients Diagnosed with Hypopharyngeal Cancer

Abstract

OBJECTIVE: There have been few series to report on the incidence of multiple primary tumors associated with hypopharyngeal cancer. A unique consecutive patient group in a closed community who were treated by a single surgeon was available. The incidence and effect of multiple primary tumors were unknown. STUDY DESIGN: We sought to assess (1) the incidence of multiple primary tumors among patients with hypopharyngeal cancer who were treated at a tertiary center, (2) the incidence of synchronous and metachronous tumors, and (3) the location of these multiple primary tumors and their effect on patient survival. METHODS: We conducted a retrospective study of case notes of 150 consecutive patients with hypopharyngeal malignancy treated by a single surgeon between 1983 and 1998. Information was compiled from the patients' medical records and death data from the Family Health Services Authority. RESULTS: Thirty-four patients had multiple primary tumors (22.6%). There were 22 men and 12 women; piriform fossa tumor was seen in 21 men and 6 women, and postcricoid space tumor was seen in 6 women and 1 man. Second primary tumors were synchronous in 7 patients, subsequent to hypopharyngeal tumor in 5 patients, and antecedent to hypopharyngeal tumor in 14 patients. Eight patients had 2 primary tumors, of which 4 were synchronous, 4 were subsequent, and 8 were antecedent to hypopharyngeal malignancy. On the last review (2001), 3 patients were alive, and 31 had died: 17 had died from primary malignancy, 11 from another malignancy, and 3 from unrelated causes. CONCLUSION: The presence of second primary tumors in hypopharyngeal cancer is higher than previously reported, and their presence had a significant effect on the patients' survival.