Colloid Cyst of the Third Ventricle

The following case is noteworthy because of the unusual nature of the tumor and because of the interesting symptoms which followed operation. Since it was necessary to section the posterior half of the corpus callosum to remove the tumor, the postoperative disorders have a direct bearing on the problem of the callosal syndrome. The patient was a highly intelligent woman who was not in any way neurotic or given to exaggeration. It was possible to follow her case over a number of years, both before and after the operation, and an unusual opportunity was presented to study under the most favorable circumstances the interesting problems presented. REPORT OF CASE Paroxysmal headaches precipitated by flexion of the head and by stooping, later accompanied with vomiting, bradycardia and syncope. Colloid cyst of anterior part of third ventricle localized and removed successfully five years after onset of symptoms. Posterior half of corpus callosum