上顎洞悪性腫瘍の骨壁に対する侵襲について
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概要
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To observe the changes within the bony structure in the malignant, neoplogms of maxillary sinus, we had studied 52 cases which include 45 cases of carcinoma and 7 cases of sarcoma. The 52 cases studied histolcgically were those in which the entire maxillary sinus was operatively removed. Cases, in which patial removal of the maxillary sinus has been done, are not included in this study ps the patial specimens are unsuitable for definetive study.The tumors were divided into six groups (I-VI) according to the degree of histological differentiation of the malignant tumor. The histologic pattern of the tumor was compared to the type of destruction of the aurrounding bone. There were noted 3 types of bony destruction namely; (1) lacunar resorption, (2) flat resorption and (3) halisteretic resorption.We noted there was a definite cerrelation between the degree of histologic differentiation and the type of bone destruction. The polymorphic poorly differentiated tumors caused a flat type of bone resorption, while well differentiated tumors in general caused a lacunar resorption.Halisteretic resorption was noted in a few cases of poorly differentiated tumors. Moderately differentiated fumors were observed to show both flat and lacunar types of resorption in the same case.We also noted foci of bone proliferation majority of the cases.There were three types of bone proliferation; (1) periosteal (reactive) (2) appositional (regenerative) and (3) interstitial (metaplastic). We coud not find any definite correlation between the degree of histologic differentiation and type of bone proliferation.
- 社団法人 日本耳鼻咽喉科学会の論文