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Sonographic evolution of cornual pregnancies treated without surgery.

Transvaginal sonography allows early and accurate diagnosis of cornual pregnancy, as well as providing a means for puncture injection treatment of certain ectopic pregnancies. We describe four cases of cornual pregnancy managed nonsurgically and followed with transvaginal sonography for 47-64 weeks. Sonographic evidence of cornual pregnancy persisted throughout the period of follow-up, despite resumption of normal menstrual cyclicity. We conclude that some early live cornual pregnancies can be managed by puncture injection, and cornual pregnancies in which the embryo has died can be followed conservatively.