Ectopic pregnancy: surgical-pathologic correlation with US

The ultrasound (US) examinations of 53 patients with proved ectopic pregnancy were reviewed and compared with surgical and pathologic findings. The most common finding with US and surgery was free fluid. Hematosalpinx tended to have sharply defined margins, whereas free pelvic hematomas were poorly defined or filled the pelvis. The echogenicity of the clots was variable but generally in the same range of echogenicity as the uterus. A prominent decidual reaction occurred in 26% of the patients and had a variety of appearances.