Radiation cancerを続発した喉頭Hemangiopericytoma症例

HEMANGIOPERICYTOMA OF THE LARYNX, A CASE REPORT

　Ⅰ．緒言

　毛細血管の周辺細胞pericyteより発生した腫瘍すなわちHemangiopericytomaは比較的稀である。特にその喉頭に発生せるものは，これまで文献上2例に過ぎず，はなはだ稀であるばかりでなく，詳細な記載を欠くので，ここに1症例を追加したいと思う。本例はHemangiopericytomaと同時に左顎下腺混合腫瘍を併発しており，また治療後1年余でradiation cancerと推定される喉頭癌を発生し，喉頭全摘を余儀なくされた点で貴重な症例と考えられる。

　A rare case of laryngeal hemangiopericytoma is reported.

　A man, aged 47, complained of dyspnea, aphonia and a laryngeal tumor, which proved to be hemangiopericytoma by biopsy. The patient was treated with surgical operation supplemented by irradiation therapy consisting of 6, 120R. of Co⁶⁰. At the same time the patient had another tumor in the left submaxillary gland, which proved to be a socalled 'mixed tumor'. This growth was enucleated.

　One year and three months after the initial irradiation therapy the patient developed a squamous cell carcinoma on the left inner side of the larynx. This growth was considered to be a "radiation cancer" caused by previous irradiation. The shortness of the latent period that existed between the initial irradiation and the appearance of radiation cancer might have been abetted by complication of the operative wound by laryngeal fistulization and the high doses of irradiation therapy given to the hemangiopericytoma.

　A clinical review of literatures on hemangiopericytoms in the head and neck region is added.