A patient has been diagnosed with a pituitary adenoma. Which assessment finding supports that it is a nonfunctioning form?
1. 20/60 vision using a Snellen chart
2. A round, moon-shaped face
3. A protruding lower jaw
4. Report of insomnia
1
Rationale 1: Nonfunctioning pituitary adenomas produce symptoms caused by pressure of the tumor on surrounding structures, such as the optic nerve. Frequently, visual loss is the presenting symptom, sometimes in the form of decreased acuity.
Rationale 2: Functioning pituitary adenomas produce endocrine symptoms such as a moon-shaped face.
Rationale 3: A protruding lower jaw is not associated with a nonfunctioning pituitary adenoma.
Rationale 4: Insomnia is not associated with a nonfunctioning pituitary adenoma.
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