恶性纤维组织细胞瘤发生在腹膜后的,据Dvng Hanji等1983年收集到的国内外已有资料,仅有23例。本例发生在下腹部盆腔处,而且巨大,实属罕见。据目前报道,手术摘除尚有困难,我等采用术前冲击性化疗三天再手术,结果完整摘除成功。患者男性,42岁,因反复便秘三月余伴下腹 Malignant fibrous histiocytoma occurs in the retroperitoneum. According to data collected by Dvng Hanji et al. in 1983, there are only 23 cases. This case occurs in the lower abdomen, pelvic area, and it is huge, it is rare. According to current reports, there are still difficulties in surgical removal. I used preoperative shock chemotherapy for three days before surgery and the results were completely removed. Male patient, 42 years old, with more than three months of constipation due to repeated constipation