クライオサージェリーの検討—扁平上皮癌を中心として

EVALUATION OF CRYOSURGERY

　Ⅰ．緒言

　cryosurgeryは18世紀から行なわれていたが^1）2），液体窒素などを効果的に使用する器具の作製により1960年代に至りCooper^{12）15）18）20）21）22）}らにより近代cryosurgeryが始められたといえる。その後，器具の改良が行なわれ^{9）17）20）22）24）32）33）36）43）47）}，産婦人科^20）54），泌尿器科^{20）31）32）34）41）}，眼科^29）58），皮膚科^{33）47）55）}，外科^35）46）領域にも応用されるに至つた。

　外面から観察され得る疾患が多く，醜形，機能障害などの問題の多い耳鼻咽喉科領域には利用すべき方法であり，事実1960年後半から種々の報告がなされている^{17）22）24）25）36）40）43）44）45）50）51）52）55）56）57）59）}。

　The author, since 1968, treated 30 cases of affections involving the field of otolaryngology and ophthalmology by means of cryosurgery. The results are reported as excellent in treatment of teleangioma, epistaxis and xanthoma. It also seems highly satisfactory in treatment of neoplasms which are surface growths and not involving the deeper tissues such as the maxillary sinus cancer, lingual cancer and cancerous growths in and around the canthus of the eye.

　The procedure in this method is rather simple ; the effects to other parts of the body is almost negligible and causes no complication. It is applicable in the range of office practice and to patients to whom other methods may be contraindicated.

　However, when cancerous involvements are found to be extending into deeper structures, the method should no longer be tried. The author feels that there is a necessity of further study on the type of instruments used today and the method of refrigeration of the parts.