腹膜后良性间叶瘤颇为少见,多发者更为罕见,国内报告甚少。我院遇到一例,现报道如下。患者,女,50岁。二月前因过度劳累自感腹部不适,活动时伴牵拉下坠感。近来因症状加重,并触及拳头大肿物,于1985年12月来我院就诊。查体:一般情况好,腹软,肝脾未触及。腹部左侧于平脐处及下腹部扪及拳头大 Retroperitoneal benign mesothelioma is rare, with multiple cases being more rare and rarely reported in the country. Our hospital encountered one case and the report is as follows. Patient, female, 50 years old. She felt self-inflicted abdominal discomfort due to overwork before February, and she felt a sense of falling when she was active. Recently due to aggravation of symptoms and touched fist masses, he came to our hospital in December 1985. Physical examination: Generally good, soft abdomen, liver and spleen not touched. Left abdomen at flat umbilicus and lower abdomen with large fists