Crossed fused renal ectopia

Case contributed by Bahman Rasuli
Diagnosis certain

Presentation

Sudden onset severe pain at the left lower quadrant of the abdomen.

Patient Data

Age: 45 years
Gender: Male
ct
This study is a stack
Axial
non-contrast
This study is a stack
Coronal
non-contrast
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Info

Absent right kidney in right renal bed, fused to the lower pole of the left kidney.

Both kidneys are malrotated and have an anteriorly-directed pelvis. 

There is a 5 mm hyperdense stone along with the right ureter just inferior to the ureteropelvic junction associated with upstream mild hydroureteronephrosis.

Case Discussion

Crossed fused renal ectopia refers to a renal anomaly where the kidneys are fused and located on the same side of the midline.

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