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In utero syphilis infection, or congenital syphilis, results from transplacental transmission of the maternal infection from the spirochete Treponema pallidum, subspecies pallidum.

For a general discussion, and for links to other system specific manifestations, please refer to the article on syphilis.

Pathology

The pathogen is capable of crossing the placenta during any time in gestation.

Markers

The following tests can be assessed on maternal blood

  • fluorescent treponemal antibody absorbed test (FTA-ABS)
  • rapid plasma reagin (RPR)
  • venereal disease research laboratory test (VDRL)

Radiographic features

Antenatal ultrasound

Sonographic features are often non specific and mimic those of the generalized in utero infection.

Such features include

In severe cases there may be evidence of

Treatment and prognosis

Treatment in often with penicillin. Fetal demise or still birth can occur in ~ 50% of untreated cases. Fetus developing hydrops tend to have a very poor prognosis.

See also

Siehe auch:
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