Brain Injury

The wife of a 75-year-old previously healthy man calls her internist to report her husband’s acute episode of “confusion.”

At 29 weeks of gestation, an enlarged cisterna magna of 1.1 cm had been discovered on fetal ultrasonography. Repeated measurement at 36 weeks had shown a dilation of 1.2 cm.

Anisocoria can be a critically important clinical finding in patients given that it has been associated with severe, life-threatening neurologic conditions.