To the Editor:—
In the very excellent report, "Hydronephrosis in Infants and Children," by Uson, et al (205: 323, 1968) two of the clinical observations, which were emphasized, merit further comment.
Indications such as (1) congenital malformations
Most abdominal, abnormal masses in children are due to kidney lesions. In our report, "Indications for Excretory Urology in Children," (Pediatrics 20:1033, 1957), 71% of the children with abnormal abdominal masses (30 of 42 patients) had kidney disease.
The increased number of children with hydronephrosis admitted to Columbia Presbyterian Medical Center was undoubtedly due to the increased awareness by the pediatricians of the possible presence of an abnormality of the excretory tract. The years 1940 to 1945 mark the era when pediatricians were first becoming aware of the fact that a congenital anomaly of the excretory system may exist without the presence of white or red blood cells in the urine.