There is a ~1.5cm lesion extending from the left through a peduncle and in the left midbrain and pons. This demonstrates nodular peripheral enhancement.
On T2 and FLAIR sequences this lesion is predominantly hyperintense with heterogenous areas of hypointensity. There is a small amount of surrounding T2 and FLAIR hyperintensity.
At the medial and posterior aspects of this lesion there is low T2 and FLAIR signal and corresponding blooming susceptibility weighted sequences indicating the location of resolving haematoma demonstrated on previous CT.
No convincing abnormal diffusion restriction.
The brain parenchyma is otherwise unremarkable. No other signal abnormality or abnormal enhancement.
Intracranial arteries (MRA not shown) are unremarkable. No abnormal vessel, aneurysm, or early draining vein is demonstrated.
Conclusion:
Resolving haematoma in the left cerebral peduncle, left midbrain, and left pons. Adjacent lesion with nodular peripheral enhancement and central necrosis. Appearance is very suspicious for high grade glioma.