Preschooler with a palpable midline abdominal mass

Surgical image of rhabdomyosarcoma of the bladder
Surgical image shows the mass (between the surgeon’s fingers) to be extraperitoneal in location, originating from the left posterior aspect of the dome of the bladder. The mass did not appear to invade any normal structures except where it originated in the bladder, which is along the inferior edge of the image.

The diagnosis was rhabdomyosarcoma of the bladder.