Rhabdomyosarcoma, Bladder vs. Ureteral Polyp
Left picture: In this female infant a rhabdomyosarcoma of the bladder is present. Notice the thickness of the wall which is held to the side by a forceps. The tumor is growing through the bladder wall at the upper border of the picture. Right picture: In this schoolboy a polyp is present in the large proximal ureter; notice the small and slender wall of this hollow organ which is retracted by a stay suture to the side. The exophytically growing tumor has a circumscript insertion at the ureteral wall and can be removed totally by a localized resection; for that, look at the figure at the bottom of the same side.
Left picture: The operative findings show an opened cavity which is filled with multilocular masses. The leading symptoms and signs were hematuria, disorders of bladder voiding, and others. Right picture: At surgery an opened lumen is visible, filled with a longitudinal mass. In this patient the leading symptoms are hematuria and intermittent abdominal colics.