[1] Pak J O, Durfee J K, Pedro L, et al. Retroperitoneal ectopic pregnancy [J]. Obstet Gynecol, 2018,132(6):1491-1493. [2] Lu Q, Zhang Z, Zhang Z. Laparoscopic management of retroperitoneal ectopicpregnancy [J]. J Minim Invasive Gynecol, 2019,26(3): 405-406. [3] Hall J S, Harris M, Levy R C, et al. Retroperitoneal ectopic pregnancy [J]. J Obstet Gynaecol Br Commonw, 1973,80(1): 92-94. [4] Ferland R J, Chadwick D A, Brien J A, et al. An ectopic pregnancy in the upper retroperitoneum following in vitro fertilization and embryo transfer [J]. Obstet Gynecol, 1991,78(9): 544-546. [5] Sotus P C. Retroperitoneal ectopic pregnancy: a case report [J]. JAMA, 1977, 238(13): 1363-1364. [6] Terrier J P,Garcia S,Hardwigsen J, et al. Retroperitoneal ectopic pregnancy: report of a case [J]. Ann Pathol, 1998, 18(3):201-202. [7] Iwama H, Tsutsumi S, Igarashi H, et al. A case of retroperitoneal ectopic pregnancy following IVF-ET in a patient with previous bilateral salpingectomy [J]. Am J Perinatol, 2008, 25(1):33-36. [8] Eisner S M, Ebert A D, David M. Rare ectopic pregnancies - a literature review for the period 2007﹣2019 on locations outside the uterus and fallopian tubes [J]. Geburtshilfe Frauenheilkd, 2020, 80(7): 686-701. [9] Yang Z, Wei S, Wu J, et al.Retroperitoneal ectopic pregnancy: a literature review of reported cases [J]. Eur J Obstet Gynecol Reprod Biol, 2021, 259(4):113-118. [10] 李丽果,夏 梦,刘军秀,等. 腹膜后妊娠1例[J]. 中华妇产科杂志,2018,53(5):341. [11] Huang X, Zhong R, Tan X, et al. Conservative management of retroperitoneal ectopic pregnancy by computed tomographic-guided methotrexate injection in the gestational sac: 2 case reports and literature review [J]. J Minim Invasive Gynecol, 2019,26(6):1187-1192. [12] 杨怡卓,李亚里,宋 磊,等. 1例腹膜后异位妊娠的临床诊治分析[J]. 解放军医学杂志,2018,38(9):784-785.