How is morphology of ectopic pregnancy?

➢ In all sites, early development of ectopic pregnancies proceeds normally, with formation of placental tissue, the amniotic sac, and decidual changes. ➢ With tubal pregnancies, the invading placenta eventually burrows through the wall of the fallopian tube, causing intratubal hematoma (hematosalpinx), intraperitoneal hemorrhage, or both. ➢ The tube is usually distended by freshly clotted blood containing bits of gray placental tissue and fetal parts. ➢ The histologic diagnosis depends on visualization of placental villi or, rarely, of the embryo