Lymphangiomas are rare benign cystic tumors of the lymphatic system.Retroperitoneal lymphangiomas account for 1%of all lymphangiomas,and approximately 186 cases have been reported.They may clinically present as a palpable abdominal mass and can cause diagnostic dilemmas with other retroperitoneal cystic tumors,including those arising from the liver,kidney and pancreas.This report describes the rare case of a cystic retroperitoneal lymphangioma in a 54-year-old male patient.The lymphangioma had progressed to the point of inducing clinical symptoms of abdominal distention,abdominal pain,anorexia,fever,nausea and diarrhea.Radiological imaging revealed a large multiloculated cystic abdominal mass with enhancing septations involving the upper retroperitoneum and extending into the pelvis.Surgical removal of the cyst was accomplished without incident.A benign cystic retroperitoneal lymphangioma was diagnosed on histology and confirmed with immunohistochemical stains.
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