[A very rare congenital condition involving the complex of Wilms' tumor, aniridia, genitourinary abnormalities, and mental retardation. Wilms Tumor-Aniridia-Genitourinary Anomalies-Mental Retardation (WAGR) syndrome involves hemizygous deletions of several adjacent genes in chromosome region 11p13. Two or more of the four conditions must be present for an individual to be diagnosed with WAGR Syndrome. The clinical picture varies, depending upon the combination of abnormalities. —2004 ( NCI )] (UMLS (NCI) C0206115) =Disease or Syndrome =ANIRIDIA; nephroblastoma; Congenital Genitourinary Abnormality; Chromosomal Disorders, Nervous System