Isthmic ectopic pregnancy

Last revised by Dr Jeremy Jones on 20 Sep 2021

An isthmic ectopic pregnancy is a subtype of tubal ectopic pregnancy an accounts for ~12% of such cases. According to one study, the rate of tubal wall disruption was higher than with an ampullary ectopic pregnancy, suggesting that in an isthmic ectopic pregnancy, the trophoblast penetrates the tubal wall relatively early 1.

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