Congenital cytomegalovirus infection diagnosed by polymerase chain reaction with the use of preserved umbilical cord.

We report a patient with congenital cytomegalovirus infection diagnosed retrospectively by real time polymerase chain reaction with the use of a preserved umbilical cord. The patient had mild developmental delay without apparent hearing loss at the diagnosis. Congenital cytomegalovirus infection was suspected on the basis of magnetic resonance imaging that showed abnormal signal intensities in the gray-white matter junction.