下咽頭脂肪肉腫の1例

Liposarcoma of the Hypopharynx

　I．はじめに

　脂肪肉腫は悪性軟部腫瘍の中では最も発生頻度の高いものである。しかし頭頸部領域における脂肪肉腫は稀である。笠者らは最近，下咽頭の脂肪肉腫を経験したので報告し，若干の文献的考察を試みた。

　A 49-year-old man, complaining of a lump in the throat, visited our clinic, and direct laryngoscopy revealed a mass at the posterior wall of the hypopharynx.

　The patient underwent lateral pharyngotomy under general anesthesia and the tumor was totally excised. Histological examination showed a predominantly myxoid type of liposarcoma. No recurrence was seen at one and a half year after the operation.

　Pharyngeal liposarcoma is a rare tumor. In 1974, only one case had been reported in the Japanese literature. The clinical and pathological findings of liposarcoma were discussed.