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Ecchordosis physaliphora

Case contributed by Maxime St-Amant
Diagnosis almost certain

Presentation

Headache. R/O mass.

Patient Data

Age: 45 years
Gender: Male
mri

Subtle extra-axial retroclival / prepontine almost isointense lesion, most readily visible on balanced steady-state gradient echo sequence, without mass effect or restricted diffusion. There is no significant bone remodeling.

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