These include: The most common disorder affecting the optic chiasm is a pituitary adenoma. Pituitary adenomas are benign tumors. In most cases, they have no impact at all, but in some cases ...

Pituitary tumors can also press on a part of the eye called the optic chiasm. This pressure can lead to vision loss, double vision, or blindness. What Is the Difference Between a Pituitary Tumor and a ...

Pituitary tumors affect the optic nerves primarily through physical compression. As the tumor grows, it may compress the optic chiasm, a critical structure directly above the pituitary gland.

MRI showed a 1.5 cm lesion in the region of the sella, abutting the optic chiasm, and consistent with the diagnosis of pituitary macroadenoma. He is otherwise asymptomatic and has normal sexual ...

Pituitary Macroadenoma. (Left) T1-weighted sagittal MRI; (Right) T1-weighted with gadolinium sagittal MRI. Note the large enhancing mass in the region of the sella that is growing up into and ...

11 Baseline and routine follow-up perimetry are important in patients with pituitary adenoma, as symptoms of optic chiasm compression may go unnoticed by patients as visual field deficits often ...

The optic chiasm and infundibulum (pituitary stalk) could not be identified on coronal or sagittal images (Figure 1). Visual field on confrontation suggested lateral field deficits (bilateral ...

The pituitary stalk tapers superiorly (cranial) to inferiorly (caudal) and measures 3.3 mm at the level of the optic chiasm and 1.9 mm at its site of insertion into the pituitary gland.

This compression can lead to the underproduction of pituitary hormones. About half of people with craniopharyngiomas have headaches. Craniopharyngiomas can also compress the optic chiasm or optic ...

A 47 year-old woman developed progressive headaches and difficulty with her vision. Neurological examination revealed a bitemporal hemianopsia. Pituitary Macroadenoma. T1-weighted coronal MRI. Note ...