What is ectopic pregnancy, and what are its CT and MRI features?
An ectopic pregnancy refers to a pregnancy located anywhere outside of the endometrial cavity. It is most commonly encountered in the isthmic or ampullary portions of the fallopian tube.
CT and MRI findings include an ectopic gestational sac; a complex hemorrhagic adnexal mass; a hematosalpinx; hemoperitoneum, and lack of visualization of an intrauterine gestation in a patient with an elevated serum beta human chorionic gonadotropin (β-hCG) level.
