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レ線深部照射が急性炎症にある程度治療効果を有する事は.一般に認められている.併しその作用機轉に就ては種々の説があつて一定しない.大体剌戟療法になるものとされているようである.私は西端教授の指導により,急性中耳災並びに乳樣突起災に対して,レ線深部療法が如何なる影響を與えるかを臨床的に観察した.研究半ばにして召集をうけたので完全に遂行する事が出來ず,種々の点に不備を認めるが,之を未発表にするに忍びず杜撰のまま原著とする次第である.
Nishihata and Fujimoto treatd 25 cases of ma-stoiditis which developed secondarly to acute otitis media with deep roentgen-ray treatment and obtained the following results: (a) In 10 cases of the 25 or 40% mastoiditis was comple-tely and definitely cured; (b) in 9 other cases or 36 % the cure was determined with some difficulty but the disease finally subsided wi-thout surgical interventions; (c) in remaining 6 cases or 24% the treatment proved ineffective and mastoideectomy was resorted to. Group (b) was considered as protracted form of otitis me-dia; while in group (c) bony degeneration of mastoid cells was invariably Present in all cases at opeartion. The deep roentgen-ray therapy for this condition if ffective at all would show its signs after 1 or 2 treatments by suddenly marked decrease of aural discharges or their complete disappearance. The effectiveness of the treatment was greater, the earlier were such treatment begun. (In the first or second week of the disease). In applying roentgen ray therapy to treatment of acute otitis media the authors believed protracted fractional method as it is sed in that of malignancies seemed to be quite unnecessry.
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