Nonimmune hydrops fetalis and fetal congenital syphilis. A case report.

Nonimmune hydrops fetalis occurred secondary to a syphilitic infection. Ultrasonographic evaluation and cordocentesis were used to confirm the antenatal infection. An IgM antibody specific for Treponema pallidum wall antigen (anti-47-kDa) was used to document the fetal infection. High-dose intravenous penicillin was administered in an attempt to achieve adequate fetal levels.