Midbrain corectopia.
Intermittent corectopia was recently observed in a patient with bilateral, rostral midbrain infarction. Results from neuropathologic examination disclosed isolated but intact Edinger-Westphal nuclei. An explanation of midbrain corectopia centered on segmental innervation of the pupil by the Edinger-Westphal nucleus. In the presence of a paralyzed dilator muscle, select, central inhibition of sphincter tone resulted in an oval and eccentric pupil.
D000328:Adult; D001927:Brain Diseases / Q000150:complications; D001932:Brain Neoplasms / Q000150:complications; D005128:Eye Diseases / Q000209:etiology; D006801:Humans; D007238:Infarction / Q000503:physiopathology*; D016403:Lymphoma, Large B-Cell, Diffuse / Q000150:complications; D008297:Male; D008636:Mesencephalon / Q000098:blood supply* / Q000473:pathology; D009802:Oculomotor Nerve / Q000503:physiopathology; D011680:Pupil / Q000294:innervation / Q000503:physiopathology*