Case Report of a Pelvic Crossed Fused Renal Ectopic Kidney

Kurume Med J . 2020 Jul 1;66(1):55-58. doi: 10.2739/kurumemedj.MS661004. Epub 2020 Apr 24.

Emily Simonds, Joe Iwanaga, Shogo Kikuta, Maia Schumacher, Graham Dupont, Juan Altafulla, Emre Yilmaz, Rod J Oskouian, R Shane Tubbs

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Abstract

Herein we present a case of a horseshoe kidney with crossed fused renal ectopia. Both of these pathologies are congenital anomalies; however, to date, there are few cases that present with both. In this case, discovered during routine dissection, the fused kidney was mostly left-sided and very low in the pelvis. No renal artery arose from the right wall of the abdominal aorta, and the right renal vein drained into the lower part of the inferior vena cava (IVC) where the right and left common iliac veins joined. It is essential for clinicians and surgeons to understand these types of congenital anomalies, as they could impact patient care.

Keywords: Ectopic kidney; cadaver, anatomy; cross fused renal ectopia; horseshoe kidney; inferior vena cava; renal artery.

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Fig. 1

Ex vivo image of the pelvic crossed fused renal ectopic kidney reported herein. AA, abdominal aorta; CIA, common iliac artery; IMA, inferior mesenteric artery; IVC, inferior vena cava; RA, renal artery; RV, renal vein; TV, testicular vein; U, ureter.

Fig 2.

Anterior view of the embalmed crossed fused renal ectopia and adjacent structures with formalin. before (a) and after (b) the abdominal aorta and arteries retracted to the left. AA, abdominal aorta; CIA, common iliac artery; CIV, common iliac vein; IMA, inferior mesenteric artery; IVC, inferior vena cava; RA, renal artery; RV, renal vein; SMA, superior mesenteric artery; TA, testicular artery; TV, testicular vein; U, ureter.