中耳癌腫の臨床的観察

抄録

Seven cases of the carcinoma in the middle ear treated in our clinic for the last 10 years from 1947 to 1957 were reported.
1) All cases but one had the previous history of the chronic middle ear suppuration with continuous or intermitentdischarge.
2) The probe-biopsy of the tissue taken from the external auditory canal of the middle ear revealed the carcinoma in the vast majority of cases. However, in some cases, due to the marked inflammatory change of the tissue, the cautious observation was required for detection of carcinoma, which appeared only at the limitted area of the specimen.
Of great importance is, therefore, the careful and through examination of the specimen for diagnosis of carcinoma in the middle ear.
3) Increase of the fetid discharge and persistent headache or earache are the signs of the malignant tumor in the middle ear.
4) According to the location and extension of the tumor in the temporal bone, carcinoma in the middleear is divided in to two types as follows.
(a) External, or superficial type. (Tympanic cavity, mastoid antrum)
(b) Internal, or profound type. (Tympanic cavity, pyramidal apex.)
5) The cases of superficial type revealed conductive deafness or combined deafness. While the cases of profound type showed total deafness with loss of vestibular function.
6) From the operation findings, the direction of extension of the carcinoma in the temporal bone was similar to that of the inflammation in the temporal bone.
7) In addition, the authors state as to the problems of treatment, especially theirradiation therapy.