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Obstetrics & Gynecology 2002;99:599-602
© 2002 by The American College of Obstetricians and Gynecologists
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CASE REPORTS

Multiple Anomalies in a Fetus Exposed to Low-Dose Methotrexate in the First Trimester

Christine Nguyen, MD, Adam J. Duhl, MD, Cathleen S. Escallon, MS and Karin J. Blakemore, MD

Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland

Address reprint requests to: Adam J. Duhl, MD, Department of Obstetrics and Gynecology, Allegheny General Hospital, 7th Floor, South Tower, 320 East North Avenue, Pittsburgh, PA 15212; E-mail: aduhl{at}wpahs.org.

ABSTRACT

BACKGROUND: Methotrexate has multiple therapeutic uses in women of reproductive age including treatment for ectopic pregnancy, neoplastic disease, autoimmune disorders, and inflammatory conditions. More frequent use of methotrexate may result in an increased number of exposures in pregnant women and their fetuses.

CASE: A 16-year-old gravida 1, para 0 used oral methotrexate treatment of 7.5 mg per day for psoriasis for 2 days at 3.5 weeks postconception. Multiple anomalies were noted on an 18-week ultrasound. Fetopsy revealed craniofacial, axial skeletal, cardiopulmonary, and gastrointestinal abnormalities.

CONCLUSION: A minimal, low-dose, brief exposure to methotrexate in the first trimester resulted in a fetus with multiple internal and external malformations. Some of the anomalies (craniofacial and skeletal) have been previously reported with first- trimester methotrexate exposure. This case depicts the association of cardiopulmonary and gastrointestinal abnormalities with methotrexate exposure.




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