Figure. Ultrasonography of congenital microencephaly caused by infection with lymphocytic choriomeningitis virus diagnosed in the fetus of a 29-year-old pregnant women at 23 weeks’ gestation. A) Fetal brain at 23 weeks’ gestation showing symetric ventriculomegaly (14 mm). Yellow symbols indicate axis at which size of cerebral ventricle was measured. B) Fetal brain at 26 weeks’ gestation showing symetric ventriculomegaly (20 mm) and thinning of the cortical mantle. Yellow symbols indicate axis at which size of cerebral ventricle was measured. C) Fetal heart at 24 weeks’ gestation showing pericardial effusion (*) and cardiomyopathy with hyperechogenic muscle. D) Sagittal section of fetal abdomen at 26 weeks’ gestation showing ascites (*).