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Surgical treatment of squamous cell carcinoma of the hypopharynx: analysis of treatment results, failure patterns, and prognostic factors.

Patients with squamous cell carcinoma of the hypopharynx (HPSCC) are often seen in advanced stages and have a poor prognosis. The authors analysed 104 patients who had HPSCC and underwent surgery as the primary treatment between 1986 and 1995 in their institute. Of the 104 patients, 83 patients (80 per cent) had advanced T(3) or T(4) staged and 64 patients (62 per cent) had cervical metastasis. Thirteen patients (13 per cent) had conservation surgery with laryngeal preservation and 69 patients (66 per cent) received post-operative radiotherapy. The five-year overall and disease-specific survival was 47 per cent and 62 per cent, respectively. Recurrence occurred in 38 patients (37 per cent), including 12 (12 per cent) with local, 22 (21 per cent) with regional, and 12 (12 per cent) with distant recurrence. Sixteen patients (15 per cent) had recurrence at multiple sites. The site and size of the primary tumour, neck biopsy before surgery, early post-operative complications, and pathological nodal stage were significant prognostic factors of disease-specific survival (DSS) in univariate analysis. Neck biopsy before surgery and site of primary tumour were significant factors in multivariate analysis. In conclusion, surgical treatment for the HPSCC patients has achieved good local-regional control and survival. Bilateral neck dissection for the tumour across the midline and avoiding neck biopsy before surgery may reduce regional recurrence.