腹膜恶性间皮瘤(peritoneal malignant mesothelioma,PMM)又称原发性腹膜间皮瘤,是起源于腹膜间皮细胞的罕见肿瘤。该病发病隐匿,临床表现无特异性,极易误诊,经常在腹腔镜检查或剖腹探查术后仍无法确诊,确诊时多为晚期,因此死亡率极高。我院收治经腹腔镜活检明确诊断的PMM12例, Peritoneal malignant mesothelioma (PMM), also known as primary peritoneal mesothelioma, is a rare tumor originating from peritoneal mesothelial cells. The incidence of occult disease, nonspecific clinical manifestations, easily misdiagnosed, often after laparoscopy or laparotomy still can not be diagnosed, diagnosed when mostly late, so the mortality rate is extremely high. Our hospital admitted by laparoscopic biopsy diagnosed PMM12 cases,