Crossed fused renal ectopia

Case contributed by Mohammad Taghi Niknejad
Diagnosis certain

Presentation

Abdominopelvic pain and microscopic hematuria.

Patient Data

Age: 65 years
Gender: Female
ct
This study is a stack
Axial with
oral contrast
This study is a stack
Axial renal
cortical phase
This study is a stack
Axial renal
excretory phase
This study is a stack
Axial delayed
- bone window
This study is a stack
Sagittal renal
cortical phase
This study is a stack
Coronal renal
cortical phase
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Info

The left kidney has not crossed the mid-line and lies on the right side, inferomedial to the right kidney and fused to the lower pole, inferring crossed fused renal ectopia.

The right renal collecting system notes a 14 mm stone with mean attenuation values of 751HU.

A 28mm calyceal diverticulum is observed in the fused part of the kidneys that contain several hyperdense stones less than 11mm and with mean attenuation values of 7311HU. In addition, a 10mm stone with mean attenuation values of 967HU is evident in the proximal part of the left ureter, which causes mild hydronephrosis.

Grade I spondylolisthesis of L5 on S1 is present.

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