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报告20例经病理诊断的肺炎性假瘤,按组织学特点分为三型:机化肺炎型,纤维组织细胞瘤型及淋巴浆细胞型。机化肺炎型周围肺泡有纤维化、中心区有间隔性纤维化及纤维母细胞增生。纤维组织细胞瘤型以椭圆形细胞增生为主,并呈轮辐状排列,肺泡结构消失。淋巴浆细胞型以淋巴细胞和浆细胞为主,并有少量纤维化。所有病例均有不同程度的机化性肺炎。认为多数病例起源于机化性肺炎。
Reported 20 cases of pathologically diagnosed pneumonia pseudotumor, according to the histological characteristics are divided into three types: organizing pneumonia, fibrous histiocytoma and lymphoplasmacytic type. Peripheral alveolar fibrosis in the pneumonia-type system, the central area of fibrosis and fibroblast proliferation. The main type of fibrous histiocytoma is oval cell hyperplasia with spheroid arrangement and disappearance of alveolar structure. The lymphoplasmacytic cells are mainly lymphocytes and plasma cells with a small amount of fibrosis. All cases have varying degrees of organizing pneumonia. It is believed that most cases originate from organizing pneumonia.