A 35-year-old primigravida woman presented to the eye emergency department with reduced visual acuity in the right eye. Humphrey visual field testing showed a monocular right eye temporal hemianopia before delivery. An MRI after delivery revealed a largely symmetrical pituitary macroadenoma with chiasmal compression. This is a rare presentation of a pituitary macroadenoma especially when the tumor is largely symmetrical.
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