Adamantinomatous craniopharyngioma

Predominantly hypodense mass in the sellar/supra sellar region with calcification.

Well defined altered signal intensity lesion with lobulated margins noted in sellar/supra sellar region. The lesion predominantly shows low signal in T1WI, high signal in T2WI which get partially suppressed in FLAIR images. A focus of heterogenous high signal in T1WI, low signal in T2WI/FLAIR with low signal in both mag and filtered phase image of SWI noted suggesting calcification. No diffusion restriction noted. Thin peripheral rim enhancement is noted after i/v contrast. The lesion is causing widening of the sella and the normal pituitary is compressed inferiorly within the floor. Superiorly it is extending in the suprasellar region and is causing elevation of the optic chiasm. Laterally is abutting the bilateral medial temporal lobe. Posteriorly the lesion is extending in the pre pontine cistern casing impression on the ventral surface of the midbrain and pons and compression of the fourth ventricle; however no obstructive hydrocephalus. The adjacent part of pons and midbrain shows high signal in T2WI/FLAIR images. The basilar artery is completely encased by the mass; but shows normal contrast opacification. The lesion is abutting the cavernous part of the right ICA and the cavernous part of left ICA is completely encased by the mass; however both ICA shows normal contrast enhancement.