Male, 56 years old, with a pituitary mass. Presurgical MRI to evaluate lesion. The sella is filled and mildly expanded by a masslike process which is heterogeneous on T2-weighted images and which enhances solidly with the exception of small internal nonenhancing foci. The lesion measures 12 mm SI x 17 mm TV x 13 mm AP. The lesion encroaches slightly on the suprasellar cistern and may contact the optic chiasm. No definite cavernous sinus invasion is seen. The pituitary stalk enhances normally and appears to enter the superior aspect of the lesion at midline. Scattered small foci of white matter T2 hyperintensity are noted in the partially visualized brain. A fluid level is demonstrated in the right maxillary sinus.
The sella is filled and mildly expanded by a mass which is T2 heterogeneous and solidly enhancing. There is some encroachment upon the suprasellar cistern where the optic chiasm may be slightly impinged. No definite cavernous sinus invasion is seen.