Trisomy 13 is a chromosomal anomaly caused by the presence of an extra chromosome 13 and is characterized by brain malformations (holoprosencephaly), facial dysmorphism, ocular anomalies, postaxial polydactyly, visceral malformations (cardiopathy) and severe psychomotor retardation.
The presence of blood in the urine. Hematuria may be gross hematuria (visible to the naked eye) or microscopic hematuria (detected by dipstick or microscopic examination of the urine).
Sweeney H, Pelegano J. J Pediatr Hematol Oncol. 2000;22(2):171-2.
A 4-year-old black boy with trisomy 13, a history of frequent urinary tract infections, and a horseshoe kidney with painless gross hematuria was examined.
