CASE HISTORY/CLINIC:
14-year-old patient after a head injury about 15 days ago.


FINDINGS:
The T2-w, Flair und T1-w show evidence of homogeneous, hyperintense, convex-shaped dorsoparietal mass lesion on the right. The lesion doesn't exceed the cranial sutures.
The structure is surrounded by a soft peripheral margin with a low signal.
A reduction in signal intensity, the so-called Subzibilitätsartefakten caused by the magnetic effekt of blood degradation products is evident on the T2-Flash image.
The lesion shows no contrast enhancement in the postcontrast T1-w (not visualized here).


DIAGNOSIS:
Subacute dorsoparietal hematoma on the right.


DIFFERENTIAL DIAGNOSIS:
Small subdural hematoma



web resources:

1) MRI-Library