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Paranaud's syndrome (dorsal midbrain syndrome)
Etiology:
- damage to the posterior commissure
a) hydrocephalus resulting from aqueductal stenosis
b) pineal region tumors (germinoma, pineoblastoma)
c) cysticercosis
d) stroke
Clinical manifestations:
- ocular gaze palsy (supranuclear)
a) inability to look up
b) pupils with slow reaction to light & brisk convergence
c) eyelid retraction, no ptosis
d) downward ocular deviation
Related
Parinaud, Henri
posterior commissure
General
syndrome
References
Harrison's Principles of Internal Medicine, 14th ed.
Fauci et al (eds), McGraw-Hill Inc. NY, 1998, pg 172