How is renal hematoma differentiated from Wilms tumor on imaging?

Updated: Mar 04, 2019
  • Author: Ali Nawaz Khan, MBBS, FRCS, FRCP, FRCR; Chief Editor: Eugene C Lin, MD  more...
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Answer

Answer

Subcapsular hematomas spread around the kidney, giving rise to an echogenic rim. Focal subcapsular hematomas may cause depression of the cortex. As the hematoma resolves, fibrosis may occur, compressing the kidney and resulting in hypertension.

Intrarenal hematomas are more frequently hypoechoic than renal contusions and subcapsular hematomas. Echogenic hematomas may be lost in the central echo complex. Renal hematomas may enlarge; therefore, they should be followed up because they may cause delayed rupture of the kidney.


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