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本文报告二例恶性外耳炎病例。致病菌都是平时即可寄生于外耳道的绿脓杆菌。一例伴有轻度糖尿病,一例无糖尿病。均在早期切除整块病灶,做了详细的组织病理学观察。结果二例的表现相同,除有溃疡形成及肉芽组织生长突出于表皮之上以外,且伴有严重的急慢性炎症征。其最突出的组织学表现是有一很厚的胶原纤维层,由软骨表面延伸到表皮内,形成为增厚的软骨膜。胶原层内血管稀少、管壁增厚,呈玻璃样变,管腔狭窄。此增厚的胶原层不仅见于溃疡区,也见于无炎症征的周围组织内。另外,作者们又从年龄相同但无外耳炎的死亡病例取外耳道标本做对照观察,未见到这种变化。
This article reports two cases of malignant otitis externa. Pathogenic bacteria are usually Pseudomonas aeruginosa parasitic on the external auditory canal. One case had mild diabetes and one case had no diabetes. In the early removal of the entire lesion, made a detailed histopathological observations. The results of the two cases of the same performance, in addition to the formation of ulcers and granulation tissue growth over the top of the epidermis, and accompanied by severe acute and chronic inflammation. Its most prominent histological manifestations are a thick layer of collagen fibers, extending from the cartilage surface into the epidermis, forming a thickening of the perichondrium. Collagen within the vascular thinning, wall thickening, was glassy change, stenosis. This thickened collagen layer is seen not only in the ulcer area, but also in the surrounding tissue that is free from inflammation. In addition, the authors again from the same age without otitis externa specimens were taken from the control of the ear canal specimens, did not see this change.