Adenocarcinoma of kidney implicated by urinary cytologic study

Adenocarcinoma of the kidney in children and adolescents is believed to be a rare disease. Although only 57 cases 1,2 have been described in the world literature, many others, no doubt, have occurred and have not been reported. Herein reported is an unusual case of a very small neoplasm in which urinary cytologic study aided in the diagnosis.