Oral Iohexol in the Management of Chylous Ascites After After Retroperitoneal or Extended Lymphadenectomy

Inclusion Criteria: * Patients between the ages of 18 and 75 years; * Patients underwent retroperitoneal or extended lymphadenectomy for abdominal or pelvic malignant tumors; * Patients diagnosisted with postoperative Chylous ascites. Chylous ascites were defined by the presence of non-infectious, milky, or creamy effluent in drainage tubes surpassing 200 mL daily, paired with triglyceride concentrations exceeding 110 mg/dL Exclusion Criteria: * Patients with severe cardiac, hepatic and renal insufficiency; * Patients with a history of iohexol allergy or allergy to contrast media; * Patients who have received other interventions; * Patients with severe intestinal obstruction or intestinal perforation; * Patients who are unable to comply with the requirements of the study or are unable to complete follow-up.