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Diffuse expansile altered signal intensity lesion involving pons with few necrotic areas in the midline and on the left side. Tiny foci of hemorrhage are seen. Mass effect is seen with effacement of 4th ventricle. No obvious hydrocephalus is seen on the present scan.
Post-contrast scans show multiple areas of irregular peripheral ring enhancement in the midline and on the left side with non-enhancing central necrotic areas.
Spectroscopy through the lesion shows reduced NAA with elevated Choline; mildly elevated lipid lactate peaks suggesting neoplastic mitotic lesion.
Findings are suggestive of brainstem glioma.