Assertion: ureteral obstruction | /r/CreatedBy | retroperitoneal adenopathy
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Source sentences:
text: Eight months later, he presented to the Emergency Department (ED) with abdominal discomfort and AKI (serum creatinine 18.2 mg/dL) and was found to have bilateral severe hydronephrosis, due to upper ureteral obstruction caused by retroperitoneal adenopathy.