Select a Community
Are you sure you want to trigger topic in your Anconeus AI algorithm?
You are done for today with this topic.
Would you like to start learning session with this topic items scheduled for future?
4th ventricle
7%
2/30
Cerebellum
43%
13/30
Pineal gland
Pituitary gland
3%
1/30
Thalamus
Select Answer to see Preferred Response
This patient with ataxia, insomnia, downward gaze, and nystagmus most likely has Parinaud syndrome, which is associated with a tumor of the pineal gland. Parinaud syndrome is a cluster of eye movement abnormalities that is characterized by paralysis of upward gaze, nystagmus, and eyelid retraction. This combination of abnormalities results in conjugate downward gaze, which is also referred to as the "setting-sun" sign. The cause of these eye movement defects is compression of the vertical gaze center in the mesencephalic tectum, which in young patients primarily occurs due to tumors of the pineal gland region. Other symptoms of pinealomas include insomnia as well as ataxia. Incorrect Answers: Answer 1: Compression of the 4th ventricle can lead to hydrocephalus; however, this would not lead to the "setting-sun" sign. Answer 2: Compression of the cerebellum can lead to ataxia and nystagmus; however, this would not lead to the "setting-sun" sign. Answer 4: Compression of the pituitary gland can lead to insomnia; however, this would not lead to the "setting-sun" sign. Answer 5: Compression of the thalamus can lead to ataxia; however, this would not lead to the "setting-sun" sign. Bullet Summary: Parinaud syndrome presents with conjugate downward gaze also known as the "setting-sun" sign.
4.2
(5)
Please Login to add comment