To the Editor: I have read with interest Dr. Winberg's letter. As Dr. Winberg points out, a mild polyuria may not be detected, and may escape attention if not searched out. There is no mention of polyuria in the records of our patient, and our only objective finding was oliguria during the last three weeks of life.
In the histologic studies reported by Ivemark et al, there are certain differences which led us to exclude that series of cases called juvenile nephronophthisis. They report small kidneys with little fibrosis of the capsules which were easily stripped off, extremely tortuous and elongated loops of Henle, cysts throughout the organ in cortex as well as medulla, and thickened basement membranes. Because of this, I chose not to include their reports in our communication.
We believe that the spectrum of clinical entities which are reported in association with small renal cysts in general