Preschooler with a right sided abdominal mass Pediatric Imaging Genitourinary November 16, 2024November 1, 2024 Axial CT with contrast of the abdomen shows a large oval low density lesion arising from the right kidney and causing a claw sign. There is also a second smaller round low density lesion arising from the posterior aspect of the left kidney. The diagnosis was bilateral Wilms tumor. Related Published November 16, 2024November 1, 2024