May Cause

Anechoic renal mass

Anterior indentation on rectosigmoid junction

Cystic abdominal mass in a fetus or newborn

Cystic fetal abdominal mass

Cystic fetal mid-abdominal mass

Cystic pelvic mass

Cystic renal mass

Enlarged iliopsoas muscle

Extrinsic pressure deformity of bladder

Filling defect in renal collecting system

Increased presacral space

Lateral deviation of upper ureter

Lesion of perinephric space

Lower abdominal mass in a neonate or child

Medial deviation of upper ureter

Perirenal fluid collection

Pleural effusion with disease in abdomen

Presacral mass

Sacrococcygeal mass

T2-hyperintense renal mass

Unilateral absence or blurring of renal outline

Unilateral large kidney

Upper abdominal mass in a neonate or child

May Be Caused by

Surgery

Trauma