肺原发性恶性纤维组织细胞瘤(mali-gnant fibroushistiocytoma,简称 MFH 恶纤组)较少见。本文报道1986～2000年间遇到3例临床病理、超微结构和免疫组化的观察结果。1 材料和方法2例为手术切除标本,1例为尸检材料。所有标本用10%福尔马林固定,石蜡包埋,HE 染色,其中1例按常规 Lung primary malignant fibrous histiocytoma (mali-gnant fibroushistiocytoma, referred to MFH evil group) rare. This article reports from 1986 to 2000 encountered three cases of clinical pathology, ultrastructure and immunohistochemistry findings. 1 Materials and Methods 2 cases of surgical resection specimens, 1 case of autopsy material. All specimens were fixed with 10% formalin, embedded in paraffin and stained with HE, of which 1 was routinely treated