肠系膜囊肿 (mesentericcyst)比较少见 ,而囊肿出血多为在囊肿的基础上发生外伤等所致 ,CT容易误诊。笔者搜集了我院自1993～ 2 0 0 2年资料完整的 4例经手术和病理证实的肠系膜囊肿并出血病例 ,结合文献资料进行回顾性分析 ,以提高对本病的认识。1　资料与方法本组 4例中 ,男 Mesenteric cyst (mesentericcyst) is relatively rare, and cyst hemorrhage mostly due to trauma on the basis of the cyst caused by CT easily misdiagnosed. The author collected four cases of mesenteric cysts and hemorrhage confirmed by operation and pathology in our hospital from 1993 to 2002. The retrospective analysis combined with the literature to improve the understanding of the disease. 1 Materials and Methods The group of 4 cases, male