A 74-year-old man reported headaches and blurring of vision for 1 month. MR
I showed a nonenhancing infundibular cyst. Neurologic findings, blood and c
erebrospinal fluid examinations, and chest and abdominal CT were all normal
. MRI 4 months later showed no change. The patient was without any medicati
on other than simple analgesics. One year later, the stalk had returned to
its normal size and configuration on MRI.