Fetal MRI in the pre-operative diagnosis and assessment of secondary abdominal pregnancy: a rare sequela of a previous caesarean section.

496 A bdominal pregnancy is a unique type of ectopic pregnancy that can be easily missed in routine obstetric practice. Current studies estimate an incidence of 1.3% (1–4). This type of pregnancy can be classified as primary or secondary, based on whether fertilization occurs in the peritoneal cavity followed by peritoneal implantation or whether normal fertilization is followed by rupture of the uterine or tube wall, leading to secondary implantation in the peritoneal cavity (5–7). The affected woman may not have any major complaints other than some discomfort. The abdomen enlarges, just as in normal pregnancy. To an unsuspecting radiologist doing a routine ultrasonography, the growing intra-abdominal fetus may appear quite healthy and have normal systemic development. We present the case of a 24-yearold patient who presented with loss of fetal movement at 26 weeks and subsequently was diagnosed with abdominal pregnancy by magnetic resonance imaging (MRI). We emphasize the importance of MRI in suspected abdominal pregnancies. In our case, the MRI both provided a definitive diagnosis and revealed the significant anatomical relationships of the intra-abdominal organs, thus aiding in the surgical management.