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Fig. 3B —MRI features of arrested pneumatization in 30-year-old woman
imaged for follow-up of oligodendroglioma (not shown) and seizures. Axial
contrast-enhanced fast spin-echo T2 image (5,200/98; NEX, 2) of same lesion
(arrow) shows heterogeneous T2 signal that is predominantly increased
relative to normal clival marrow. Given fast spin-echo T2 technique and
corresponding T1 hyperintensity, dominant regions of T2 hyperintensity are
consistent with fatty content. S = sphenoid sinus.
