Day: December 16, 2023

Teenager playing ice hockey who was hit hard by another player into the boards

CT of perirenal hematoma in a patient with a ureteropelvic junction obstruction
Axial CT without contrast of the abdomen (above) shows the unenhanced right kidney to have a low density dilated central collecting system and to be surrounded by a high density cresenteric fluid collection in the right perirenal space. Axial CT with contrast (below) better shows the low density dilated central collecting system and a decreased amount of enhancement in the right kidney when compared to the normal left kidney. The amount of enhancement in the right kidney is the same density as the right perirenal fluid collection.

The diagnosis was a right perirenal hematoma in a patient with right ureteropelvic junction obstruction.