[Painful incomplete third-nerve palsy caused by an internal carotid-communicating posterior artery aneurysm].
METHODS
A 38-year-old woman presented acute-onset, painful incomplete third-nerve palsy caused by an internal carotid-posterior communicating artery (IC-PC) aneurysm. We describe the differential diagnosis with Tolosa-Hunt syndrome and the results after endovascular treatment.


CONCLUSIONS
The presence of pupil-sparing third-nerve palsy may not exclude the presence of an IC-PC aneurysm and orbital magnetic resonance imaging and/or computed tomography imaging must be performed in these cases. The prompt recovery after endovascular treatment is consistent with previous reports.
Pérez-Flores
M I
MI
Servicio de Oftalmología, Hospital POVISA, C/. Salamanca 5, Vigo (Pontevedra), Spain. mari-nes@eresmas.net
Velasco-Casares
M
M
Lorenzo-Carrero
J
J
D000328:Adult; D002340:Carotid Artery Diseases / Q000150:complications* / Q000628:therapy; D002343:Carotid Artery, Internal / Q000473:pathology*; D002941:Circle of Willis / Q000473:pathology*; D003951:Diagnostic Errors; D004621:Embolization, Therapeutic; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications*; D008279:Magnetic Resonance Imaging; D015878:Mydriasis / Q000209:etiology; D009408:Nerve Compression Syndromes / Q000175:diagnosis* / Q000209:etiology; D015840:Oculomotor Nerve Diseases / Q000209:etiology*; D010146:Pain / Q000209:etiology*; D020333:Tolosa-Hunt Syndrome / Q000175:diagnosis; D014057:Tomography, X-Ray Computed