Bilateral, fused pelvic, ectopic, laterally rotated kidneys: A case report

Abstract

Bilateral fused ectopic pelvic kidneys with lateral rotation abnormality in both kidneys is a fortuitous developmental renal anomaly that to the best of our knowledge this is the first report of this rare anomaly in English literature. Due to the morphologic appearance of this anomaly it is likely it could contribute to the individual remaining asymptomatic therefore discovered incidentally. We present a 42-year-old male who presented with acute unilateral flank pain and incidentally discovered this rare renal anomaly which is an important diagnosis for management by both radiologists and urologists.

Keywords: Ectopic; Fused; Kidneys; Laterally rotated; Pelvic.

Fig. 1

Axial noncontrast CT images showing absence of kidneys within the renal fossae and their location in the pelvis with posterior fusion seen. CT, computed tomography.

Fig. 2

Axial pre- and postcontrast images at the level of the sacrum showing posteriorly fused, promptly excreting bilateral ectopic kidneys.

Fig. 3

Delayed images showing good excretion into the urinary bladder with a contrast fluid level seen.

Fig. 4

MPR Reformatted (A) and volume rendered (B) post contast images showing fused, ectopic pelvic kidneys inferior to the bifurcation of the abdominal aorta.

Fig. 5

Volume rendered coronal (A) and oblique (B) images of delayed excretory phases highlighting the lateral courses of both ureters and drainage into a well distended urinary bladder.

Fig. 6

Volume rendered postcontrast imaging highlighting ureteral drainage from both pelvic kidneys.