Pituitary hyperplasia resulting from primary hypothyroidism.

We report an unusual case of pituitary hyperplasia secondary to primary hypothyroidism clinically masquerading pituitary apoplexy. A 22-year-old female presented with intermittent headache, easy fatigability, facial puffiness, coarseness of facial features, and hoarseness of voice for six months duration. Diplopia and diminution of vision was also observed for the last 15 days. Brain imaging findings showed pituitary enlargement, the thyroid function test were suggestive of primary hypothyroidism. Patient did well with thyroid hormone replacement therapy.