Parts A, B courtesy of Steven A. Newman, MD; part C courtesy of Sophia M. Chung, MD.
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Visual field patterns from a patient with a pituitary tumor, showing bitemporal depression worse superiorly, with margination along the vertical midline. C, A T1-weighted coronal MRI scan shows an intrasellar enhancing mass, with extension into the suprasellar cistern and upward displacement and compression of the chiasm (arrow).