The raison d' être of this paper is given by two observations which are apt to modify some of our diagnostic views in regard to calculus formation in the urinary tract. Both are, as it seems to me, of academic interest, as well as of more than ordinary practical importance.
The first of my conclusions was reached by my experience that during a space of four years I found among eleven cases of stone in the bladder nine in which the Roentgen method showed renal calculus at the same time. In those two, in which the renal skiagraphs proved to be negative, technical defects occurred, which made the result doubtful, the patients at the same time not giving me a chance to clear up a possible error. In none of the patients were clinical symptoms present which pointed to the presence of nephrolithiasis. In five of the cases skiagraphy was
BECK C. THE RENAL ORIGIN OF VESICAL CALCULI, WITH OBSERVATIONS ON CALCAREOUS TUMORS OF THE BLADDER.. JAMA. 1908;LI(11):885–887. doi:10.1001/jama.1908.25410110007001a