In contrast to previous ideas, accumulating experience in the field of juvenile urology is all convincing that the child, with few exceptions, is subject to the same character of urinary disorders as the adult. Furthermore, interest is drawn to the coexistence in the child and the adult of the so-called silent phase of certain well recognized pathologic conditions (calculi, hydronephrosis, ureteral stricture). Most interesting in this connection is the probable onset and duration of these lesions noted in adult life. To illustrate, a patient requests a urologic analysis. He has recently experienced for the first time symptoms of urinary colic. Urologic examination discloses a well marked hydronephrosis or hydro-ureter of sufficiently large proportion to preclude the probability of recent development. The question suggests itself, Is it not likely that we are dealing with a lesion silent since birth or in which the symptoms have been overlooked during early childhood? In
SMITH CK. URINARY CALCULI IN CHILDREN. JAMA. 1928;91(19):1431–1435. doi:10.1001/jama.1928.02700190015005
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