又称腹膜下筋膜、腹膜外筋膜、腹膜外脂肪，是位于腹横筋膜与壁腹膜之间的疏松结缔组织，向后与腹膜后隙疏松结缔组织相连续，在腹下部特别是腹股沟区含较多脂肪组织。例如：十二指肠、胰、升结肠和降结肠。
方法不缝合腹膜，在腹膜外将皮肤、皮下组织、腹外斜肌腱膜、腹内斜肌、腹横肌一层缝合。
Methods full thickness suture out of the peritoneum which consist of skin subcutaneous tissues aponeurosis of obliquus externus abdominis obliquus internus abdominis transverses abdominis.
方法不缝合腹膜，在腹膜外将皮肤、皮下组织、腹外斜肌腱膜、腹内斜肌、腹横肌一层缝合。
Methods Full thickness suture out of the peritoneum which consist of skin, subcutaneous tissues, aponeurosis of obliquus externus abdominis, obliquus internus abdominis, transverses abdominis.
目的：评估B超、CT、MRI、血管造影对盆部腹膜外软组织肿瘤的诊断价值。
Purpose: To estimate the diagnostic values of B-US, CT, MRI and angiography for extraperitoneal pelvic soft tissue neoplasms.
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