Extremity Findings of Methotrexate Embryopathy.

Background

Methotrexate (MTX) is widely used as an immunosuppressant, chemotherapeutic, and abortifacient agent. It is also a potent teratogen, and intentional or unintentional exposure during pregnancy is associated with heterogeneous birth anomalies.

Methods

We retrospectively reviewed a cohort of patients who presented to our clinic with limb anomalies in the setting of MTX embryopathy.

Results

In our case series, we describe 7 cases of patients who had limb anomalies with heterogeneous functionality, from severely debilitating to completely asymptomatic. Most of the upper extremity anomalies in our group were managed conservatively.

Conclusions

Methotrexate embryopathy is a rare but clinically important entity with phenotypic and functional variability. This series underscores the need for proper counseling of patients and raises concern regarding using this medication for the purpose of abortion.