Horseshoe kidney - MRI
Incidental finding. MRI was performed to rule out pancreatitis.
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The pancreas shows normal size, signal intensity, and homogeneous enhancement with no surrounding fat stranding or collection seen.
Normal size and wall thickness of the gallbladder with no gallstones seen. Normal appearance of the intra-and extrahepatic biliary ducts with no CBD stone seen.
A horseshoe kidney is noted: both kidneys are fused at their lower poles forming a parenchymal isthmus (or bridge) crossing the midline anterior to the aorta and IVC at L2-L3 level. No dilatation of the renal cavities is seen.
Normal MRI appearance of the pancreas and biliary tree.
Horseshoe kidney (incidental finding).
Horseshoe kidney is considered as the most common type of renal fusion anomaly. On imaging, especially on ultrasound, the parenchymal isthmus crossing the midline anterior to the aorta and IVC should not be mistaken for retroperitoneal mass such as lymphoma or metastatic lymphadenopathy.