In an extensive review of patients with unilat¬ eral exophthalmos, Van Buren et al' refer to a group of patients whose proptosis resulted from venous hypertension. They note that asymmetric compression of the orbital venous drainage through the cavernous sinus should be a rare mechanism in view of the relatively free collateralization in this region. However, there are indi¬ vidual cases in which this mechanism has been well documented, especially in sellar and parasellar lesions.In our patient, the third ventricle may have acted as an intrasellar mass, causing both optic chiasm and cavernous sinus compression. The dramatic response of this patient's signs to cerebrospinal fluid diversion and their return with shunt malfunction suggest that the findings of unilateral proptosis, visual field defect, and hydrocephalus are interrelated.
Students who had headaches or who had missed high school because of headaches were no more likely than their peers to have low scores on the Gates-MacGinitie tests of Vocabulary and Comprehension. This does not support the hypothesis that children with severe headaches are more likely than their peers to have trouble with school work. Students who identified themselves as ambidextrous were at approximately 50% greater risk than right-handers and left-handers of experiencing headaches. This can be viewed as providing some support for the Geschwind-Behan hypotheses that migraine and handedness are not independent phenomena.
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