title: Trochlear nerve pareses with brainstem lesions.
abstract: Three cases of radiographic localization of fourth nerve lesions are reported: case 1--bilateral pareses due to traumatic contusion; case 2--left paresis from a collicular gunshot wound; and case 3--bilateral pareses due to a (cysticercal) cyst in the caudal cerebral aqueduct.
mesh_terms: D000328:Adult; D000792:Angiography; D001933:Brain Stem / Q000000981:diagnostic imaging; D003389:Cranial Nerve Diseases / Q000000981:diagnostic imaging / Q000503:physiopathology; D003551:Cysticercosis / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D010243:Paralysis / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D014321:Trochlear Nerve / Q000000981:diagnostic imaging* / Q000503:physiopathology; D061247:Trochlear Nerve Injuries