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I.緒言
Cylindromなる名称は,様々な腫瘍に二次的に生じた組織学的特徴をとつてつけた名称で,腫瘍の本質をついたものでなく,その概念も学者に依り必ずしも一致しない。しかし近年内皮腫や耳下腺の所謂混合腫瘍の研究と相俟つて,Cylindromは組織学的及び臨床的に,特徴をもつた腫瘍群として注目されるようになつてきた。私は鼻腔副鼻腔に発生したCylindromの2例を経験したので報告し,併せてこの腫瘍に関する最近の概念を紹介したい。
Two cases of nasal cylindroma are reported. Case I.A man aged 27 with a history of having had epistaxis of 3 years standing was operated on several occasions for polyposisand sinusitis. The diagnosis of cylindroma was established by microscopic examination. Partial resection of the maxilla was performed by Denker's method and 1482 mgst of radium irradiation was given the area of the removal.
Case II. A woman, aged 33, with a complaint of nasal obstructions was operated on several occasions for bleeding polyps and sinusitis. No improvement was seen thereafter. The diagnosis of cylindroma was made by microscopical examination. The patient was treated with Denker's operation and radium irradiation.
Morphologically cylinbrona is benign tumor consisting of glandular tissues, but, clinically it is capable of invasions into surrounding tissues and of causing metastasis into remoter parts ; it would be best considered as a malginancy and the treatment of this condition should be likewise in accordance to that of a malignant tumor.
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