Oculomotor nerve anastomosis

We report a patient who underwent anastomosis of the left oculomotor nerve, which had been inadvertently and bluntly severed during the resection of a left parasellar chromophobe pituitary adenoma. Neural regeneration was confirmed by the reappearance of voluntary adduction of the eyeball, clinical signs of aberrant regeneration, and the appearance of an action potential on electromyography of the levator palpebrae superioris muscle 1 year after end-to-end anastomosis of the nerve.