腹内淋巴管瘤较罕见，归类于肠系膜和腹膜后腔囊肿，主要为淋巴系统先天发育缺陷所致。此肿瘤可发生于任何年龄，且成人及儿童腹内淋巴管瘤各有其特点，症状不同。一般单纯良性间皮瘤和间皮囊肿多发生于中年妇女，患者多无症状。诊断：部分患者临床无症状，有症状者多表现... Intraabdominal lymphangioma is rare and classified as mesenteric and retroperitoneal cavity cysts, mainly due to congenital developmental defects in the lymphatic system. This tumor can occur at any age, and adult and children’s intra-abdominal lymphangioma have their own characteristics and different symptoms. Generally simple benign mesothelioma and mesothelial cysts occur in middle-aged women, and many patients are asymptomatic. Diagnosis: Some patients are clinically asymptomatic;