上顎癌予後不良例のCTによる再検討

CT scan for the Diagnosis of Maxillary Sinus Carcinoma

I．はじめに

　われわれは上顎癌（上顎洞癌〉に対し，機能と形態を保存する方針で，いわゆる上顎癌に対する三者併用療法を行っている。その中で，予後を左右する因子の一つとして，腫瘍の進展方向，進展度が関係するのではないかと考え，CT所見を基に腫瘍の進展方向，進展度と予後との関係について検討を加え，若干の知見を得たので報告する。

　A comparative study between the conventional radiological examination and the computed tomographical examination for the diagnosis of maxillary sinus carcinoma was done. CT scan has been more appreciated to detect the tumor invasionin the pterygopalatine fossa, orbit, posterior ethmoid sinus and skull base than the conventional examination. CT scan was most usefull for the determination of size and location of the tumor. The prognosis by the stage-grouping was significantly separated by the new classification with CT scan. Therefore, new TNM classification of maxillary sinus carcinoma with CT scan should be taken into account.