图右示输卵管的上皮组织，有破裂出血。图左下方有胎盘绒毛。妊娠试验阳性（HCG阳性）、超声检查以及后穹隆穿刺出血液，是诊断输卵管异位妊娠的有力证据。
异位妊娠模式图 | 输卵管妊娠:双胞胎(大体) | 破裂切除标本(大体) | 出血(镜下) | 示血凝块和胎盘绒毛(镜下)
A positive pregnancy test (presence of human chorionic gonadotropin), ultrasound, and culdocentesis with presence of blood are helpful in making the diagnosis of ectopic pregnancy. Seen here is tubal epithelium at the right, with rupture site and chorionic villi at the lower left.