Management of the Patients with Hypopharyngeal Cancer: Eight-Year Experience of Miyagi Cancer Center in Japan

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The aim of this study is to evaluate the results of treatment for hypopharyngeal cancer and indicate the future prospect of the treatment. Seventy-four patients with squamous cell carcinoma of the hypopharynx admitted to Miyagi Cancer Center from 1993 through 2000 are reviewed. Sixty-four patients received radical treatment, and 10 patients received palliative treatment or no treatment. The cancer was advanced (stages III and IV) in 82% of all the patients. The overall 5-year survival rate of all the patients was 38%. The overall 5-year survival rate of 64 patients received radical treatment was 43%. The ten patients who received palliative treatment or no treatment died of cancer within 16 months. Fifty-two out of the 74 patients underwent neck dissection for the neck lymph node involvement; forty of the 52 patients underwent ipsilateral neck dissection and 12 underwent bilateral neck dissection. Four out of the 40 patients, who underwent ipsilateral neck dissection alone, developed late contralateral regional recurrence but were successfully treated by contralateral neck dissection at the time of recurrence. Twenty-three out of 74 patients had multiple primary cancers synchronously or metachronously (31%). Cause of the death of six patients out of 74 patients was confirmed to be primary cancers other than hypopharyngeal cancer, as judged by physicians in other department or other hospitals. Most of the patients died due to distant metastasis from hypopharyngeal cancer or other primary cancers. We therefore conclude that contralateral elective neck dissection which is frequently chosen for the treatment of hypopharyngeal cancer surgery is unnecessary. Even if locoregional control is accomplished, distant metastasis or multiple primary cancers emerge and make prognosis poor. To improve the prognosis, we should develop some strategy against hypopharyngeal cancer for each patient. New strategies including chemoprevention and surgery against distant metasistasis are necessary.

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