Simrit Nijjar

1 Introduction Caesarean scar ectopic pregnancy (CSEP) is defined as the implantation of the blastocyst and the development of the gestational sac within a myometrial scar defect following one or more previous caesarean births (CBs) [1]. First described by Larsen et al. in 1978 [2], CSEP was not formally recognised as a variant of uterine ectopic pregnancy by the international gynaecological community until 2020 [3].

1 Introduction With the global rise in caesarean delivery (CD) rates [1], caesarean scar ectopic pregnancy (CSEP), once rare, is now the most common type of uterine ectopic pregnancy. The impact of CSEP on future fertility, outcomes in subsequent pregnancies, and complications during ongoing CSEP pregnancies remains poorly understood, with no consensus on the optimal treatment approach [2].