Superior Divisional Third Cranial Nerve Paresis

M. Tariq Bhatti, Stephen Eisenschenk, Steven N. Roper, John R. Guy
2006 Archives of Neurology  
Within the midbrain, the third nerve nucleus is composed of a complex of subnuclei. The fascicular portion of the nerve courses through the red nucleus and exists in the midbrain just medial to the cerebral peduncle. The cisternal portion of the nerve is a single structure that divides into a superior branch and an inferior branch in the region of the cavernous sinus and superior orbital fissure. Objective: To describe 2 patients with superior divisional third cranial nerve paresis resulting
more » ... m a lesion involving the cisternal portion of the nerve prior to its anatomical bifurcation. Patients: Case 1 was a 77-year-old man with a superior divisional third nerve palsy as the presenting manifestation of a posterior communicating artery aneu-rysm. Case 2 was a 41-year-old woman who developed a superior divisional third nerve palsy following anterior temporal lobectomy for epilepsy. REPORT OF CASES CASE 1 A 77-year-old man was referred to the Neuro-Ophthalmology Service at the University of Florida, Gainesville, with a
doi:10.1001/archneur.63.5.771 pmid:16682550 fatcat:oz6xk3nglnhkrg2efrhnto34qi