A patient has a large pituitary macroadenoma. Besides endocrine changes, they report losing their peripheral vision. This is due to compression of which structure?
Show answer and explanation
Correct answer: Optic chiasm
The pituitary gland sits in the sella turcica, directly below the optic chiasm. Upward expansion of a tumor can compress the crossing fibers of the chiasm, resulting in bitemporal hemianopsia (loss of the outer half of both visual fields).
Keep practicing
More Pituitary and Thyroid Physiology questions
- In a healthy individual, which of the following is the strongest stimulus for the release of ADH?
- Congenital hypothyroidism (Cretinism) leads to profound intellectual disability and stunted growth because thyroid hormones are essential f…
- Which pituitary hormone is essential for postnatal growth and metabolism?
- Which thyroid hormone is present in the highest concentration in the circulation?
- Which pituitary hormone directly stimulates thyroid hormone synthesis and release?
- Which hormone inhibits thyroid-stimulating hormone release from the pituitary?