Retroperitoneal lymphatic cyst (cystic lymphangioma).
D000005:Abdomen; D000008:Abdominal Neoplasms; D003560:Cysts; D006801:Humans; D008202:Lymphangioma; D018191:Lymphangioma, Cystic; D042601:Lymphatic Vessels; D008210:Lymphocele; D008499:Medical Records; D009369:Neoplasms; D012187:Retroperitoneal Space
ABDOMEN/neoplasms; LYMPHANGIOMA/case reports