[Case of cerebral aneurysm producing the aberrant regeneration of the oculomotor nerve].
We reported a 61-year-old woman who developed the associated movements in oculomotor muscles after the clipping of the IC-PC aneurysm which had produced the oculomotor palsy. It has generally been assumed that the phenomenon is the result of an aberrant regeneration of oculomotor nerve fibers. The sign of the aberrant regeneration may include any of the following: Pseudovon Graefe sign: retraction and elevation of the lid on downward gaze. Gaze lid dyskinesis: elevation of the involved lid on adduction of the eye. Inability to elevate or depress the globe: the globe neither elevates nor depress in up or down gaze. Retraction of the globe: the globe can be seen to retract on vertical movement. Adduction of the involved eye on attempted depression or elevation. Pseudo-Argyll Robertson pupil: the dilated pupil will not react to light but will contract when the medial rectus, inferior rectus, or elevators of the eye are stimulated. Monocular optokinetic response: in testing the vertical optokinetic response, the normal eye responds as usual but the affected eye either remains stationary or will show a slight horizontal nystagmus. All but category 4 were noted in our case.
D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications / Q000503:physiopathology*; D008875:Middle Aged; D009416:Nerve Regeneration; D009802:Oculomotor Nerve / Q000503:physiopathology*; D009886:Ophthalmoplegia / Q000209:etiology / Q000503:physiopathology*