—Braasch and Merricks1 reported a series of 27 cases of proved renal agenesia observed at the Mayo Clinic from 1909 to the present time. The diagnosis was established at operation in 14 cases and at necropsy in 13 cases. In another series of 42 cases, the diagnosis was inferred from roentgenographic and cystoscopic data. This makes a total of 69 cases.The most frequent subjective symptom was pain on the side on which the kidney was present, which occurred in 38 of the 69 cases. The pain was usually dull, although in 8 cases it was rather severe.Findings at physical examination were normal in 46, or 66 per cent, of the 69 cases. In the 23 cases in which abnormal conditions were observed, the presence of a palpable mass in the flank on the side on which the kidney was present was the most frequent finding;
SCHOLL AJ, HINMAN F, VON LICHTENBERG A, et al. REVIEW OF UROLOGIC SURGERY. Arch Surg. 1938;36(6):1019–1074. doi:10.1001/archsurg.1938.01190240122006
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