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Suprasellar cistern lipoma

Case contributed by Behrang Amini
Diagnosis almost certain
  • Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.
mri

A) Sagittal T1-weighted image shows homogeneous high signal intensity lesion with defined borders and lobulated contour at the interpeduncular cistern projecting into the suprasellar cistern.

B) Axial FSE T2-weighted image shows high signals intensity.

C) Axial FLAIR fat sat shows complete suppression of signals.

D) Axial T1 C+ fat sat shows no enhancement and complete suppression of signals.

Case Discussion

MRI features are consistent with a fat-containing intracranial lesion at the interpeduncular cistern projecting into the suprasellar cistern with no enhancement and lobulated contour consistent with intracranial lipoma. Considering the anatomical location, features are in keeping with tuber cinereum lipoma (hypothalamic lipoma). Differential diagnosis includes tuber cinerium hamartoma but usually of no fat content, presenting in children with precocious puberty.

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