腹膜后腔 meaning in English

retroperitoneum

These neoplasms can reach a large size in the retroperitoneum before detection
被查出之前，往往在腹膜后腔能长得很大。
This is an uncommon fluid accumulation that can be due to blockage of lymphatic drainage , in this case by a malignant lymphoma involving the mesentery and retroperitoneum
这是一种特殊的液体积聚，发生于淋巴管阻塞，通常是恶性淋巴瘤累及肠系膜和腹膜后腔。