Imaging of neurologic disorders associated with pregnancy and the postpartum period.

Diverse pathologic conditions affect the central nervous system (CNS) and pituitary gland during pregnancy and the puerperium. Some are specific to the physiologic process of reproduction (eg, eclampsia, postpartum cerebral angiopathy, Sheehan syndrome, lymphocytic adenohypophysitis). Others are nonspecific but occur more often in pregnant women (eg, cerebral infarction, dural venous thrombosis, pituitary apoplexy).

West Nile virus infection.

Objective: Our objective is to present a brief review of the clinical aspects of West Nile virus infection with emphasis on the spectrum of MRI findings.

Conclusion: West Nile virus infection has become endemic in the United States and radiologists should become aware of the diverse imaging appearances in the central nervous system.