Case Report: Acquired Giant Hydronephrosis Presenting as an Abdominal Mass

Abdominal mass can be a presentation of a variety of pathologic process. One of the most important causes of it, especially in young children, is hydronephrosis. Hydronephrosis is the dilation of the renal pelvis or calyces. It may be associated with obstruction, but may be present in the absence of obstruction. Among the most common cause of hydronephrosis is congenital anomaly of ureteropelvic junction of kidneys. But acquired hydronephrosis especially in adults also may rarely present as an abdominal mass. As we know obstruction of normal urine outflow results in biochemical, immunologic, hemodynamic, and functional changes of kidneys. So, proper diagnosis and management of this pathologic condition is of at most importance to save renal function.