—Brogan1 diagnosed an embryoma of the kidney at birth and successfully removed it seventy-two hours later. The tumor, which weighed 239 Gm., had displaced the heart to the right side of the chest. No tissue resembling the kidney could be identified. The child left the hospital on the twentieth postoperative day. Fifteen weeks later the child gave no evidence of recurrence and had made a good gain in weight.
—Abeshouse2 discusses crossed ectopia with fusion and presents a review of the literature, with a report of 4 cases. The total of such cases reported to date is 337; however, this anomaly is encountered about once in every 7,500 necropsies. The six anatomic varieties, presented in order of relative frequency, are (1) elongated with ectopic kidney in inferior position; (2) sigmoid (S shaped); (3) L (transitional form); (4) disk (fusion of medial borders); (5) lump (irregular
SCHOLL AJ, HINMAN F, CROWLEY E, HEPLER AB, GUTIERREZ R, THOMPSON GJ, COOK EN, O'CONOR VJ. REVIEW OF UROLOGIC SURGERY. Arch Surg. 1948;57(6):897-932. doi:10.1001/archsurg.1948.01240020907011