肺炎性假瘤(附20例临床病理分析)

INFLAMMATORY PSEUDOTUMORS IN LUNG CLINICOPATHOLOGICAL ANALYSIS OF 20 CASES

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。

Clinicopathological analysis of 20 cases of irflammatory pseudotumors in the lung is made in this article. According to the major histopathological features, these tumors are divided into 3 types: the types of euplastie pneumonia, fibrous histiocytomas and lymphoplasmacytes. The pseudo- tumor. of the euplastic pneumonia type has fibrosis in peripheral pulmonary alveoli and interstitial fibrosis and a proliferation of fibroblasts in the central area. The fibrous histiocytoma has mainly a proliferation of elliptical cells with disappearance of alveolar architecture. Pseudotumors of the lymphoplasmacytic type have mainly lymphocytes and plasma cells and only a little fibrosis. All caseshave euplastic pneumonia of varying degees. Most inflammatory pseudotumors are believed to originate from euplastic pneumonia.