title: RARE RETROPERITONEAL TUMORS PRESENTING AS ACUTE ABDOMINAL CONDITIONS REQUIRING OPERATION.
mesh_terms: D000005:Abdomen; D000006:Abdomen, Acute; D034841:Abdominal Cavity; D001808:Blood Vessels; D006470:Hemorrhage; D006801:Humans; D008202:Lymphangioma; D008637:Mesenchymoma; D009336:Necrosis; D010336:Pathology; D012186:Retroperitoneal Neoplasms; D013514:Surgical Procedures, Operative
keywords: ABDOMEN, ACUTE; BLOOD VESSELS; HEMORRHAGE; LYMPHANGIOMA; MESENCHYMOMA; NECROSIS; PATHOLOGY; RETROPERITONEAL NEOPLASMS; SURGERY, OPERATIVE