Placental Vascular Pathology Associated with Congenital Lymphocytic Choriomeningitis Virus Infection, Philadelphia, Pennsylvania, USA.

Congenital lymphocytic choriomeningitis virus (LCMV) infection is associated with major neurologic malformations and fetal demise. We report 2 cases of probable congenital LCMV infection and chorioretinitis, cerebral ventriculomegaly, and placental histopathology in Philadelphia, Pennsylvania, USA. Clinicians who suspect congenital LCMV infection should screen for chorioretinitis, LCMV antibodies, and evidence of placental pathology.