RATIONALE Diabetic oculomotor nerve palsies, also called ischemic third nerve palsies, are the most common etiologic subset of oculomotor nerve palsy in adults. Diabetic oculomotor nerve palsies typically present with ptosis and diplopia, but pupillary function is often spared. The oculomotor nerve separates into superior division and inferior division, with the superior division innervating th...

Isolated oculomotor nerve palsy is well known as a symptom of microvascular infarction and intracranial aneurysm, but unilateral oculomotor nerve palsy as an initial manifestation of chronic subdural hematoma (CSDH) is a rare clinical condition. We report a rare case of an 84-year-old woman with bilateral CSDH who presented with unilateral oculomotor nerve palsy as the initial symptom. The pati...

Departament of Neurosurgery, Instituto de Neurologia de Curitiba, Curitiba PR, Brazil; Department of Neurology, Instituto de Neurologia de Curitiba, Curitiba PR, Brazil; Neurological Clinic of Paraíba, João Pessoa PB, Brazil. Oculomotor nerve palsy is frequently caused by an aneurismal compression and diabetes mellitus. Brainstem infarction, cavernous sinus tumors and other intracranial lesions...

A 37-year-old woman presented with an extremely rare large oculomotor schwannoma associated with acute hydrocephalus manifesting as semicoma and anisocoria. Brain computed tomography and magnetic resonance imaging revealed a tumor in the oculomotor cistern. Cerebral angiography revealed separation of the posterior cerebral artery (PCA) and superior cerebellar artery (SCA). The tumor was removed...

AIMS An anatomical study was undertaken to determine the extraneural blood supply to the intracranial oculomotor nerve. METHODS Human tissue blocks containing brainstem, cranial nerves II-VI, body of sphenoid, and associated cavernous sinuses were obtained, injected with contrast material, and dissected using a stereoscopic microscope. RESULTS Eleven oculomotor nerves were dissected, the in...

We studied the distribution of somatic motor neurons innervating the cat superior rectus 3-6 months after oculomotor nerve injury using intramuscular horseradish peroxidase (HRP). In normal cats, 98% or more of the labelled superior rectus motoneurons were in the contralateral oculomotor subnucleus. Two experimental cats who exhibited little or no evidence of recovery showed few labelled cells ...

Oculomotor palsy with cyclic spasms is an extremely rare condition whose exact pathophysiology remains a mystery. We followed boy from the onset of symptoms at age ten months until 15 years and documented case video oculography. In addition, he was diagnosed hereditary motor sensory neuropathy (Charcot-Marie-Tooth disease type 1). Although pure coincidence cannot be ruled out, it conceivable th...