UNRUPTURED INTERSTITIAL PREGNANCY - A PITFALL OF MR-IMAGING

We report two cases with interstitial pregnancy, which showed complete ly different MR appearances. In case 1, a gestational sac was demonstr ated and the diagnosis of ectopic pregnancy was straightforward. In ca se 2, a hypervascular mass was shown without demonstration of a gestat ional sac, the findings usually seen in gestational trophoblastic dise ase (GTD). MR imaging may play some role in the diagnosis of interstit ial pregnancy when sonography is insufficient or equivocal. If GS is v isualized, diagnosis is easy. However, if not, the appearance may have a spectrum and can be similar to GTD.