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What is the most common site of extrauterine embryo implantation?

By Marta Barranquero Gómez B.Sc., M.Sc. (embryologist).
Last Update: 01/19/2022

Most ectopic pregnancies occur by implantation of the embryo in the fallopian tube. Specifically, this embryo implantation usually occurs in the ampullary portion of the tube.

However, there are also cases where the embryo implants in the ovaries among others. However, this is not common.

 Marta Barranquero Gómez
Marta Barranquero Gómez
B.Sc., M.Sc.
Embryologist
Graduated in Biochemistry and Biomedical Sciences by the University of Valencia (UV) and specialized in Assisted Reproduction by the University of Alcalá de Henares (UAH) in collaboration with Ginefiv and in Clinical Genetics by the University of Alcalá de Henares (UAH).
License: 3316-CV
Embryologist. Graduated in Biochemistry and Biomedical Sciences by the University of Valencia (UV) and specialized in Assisted Reproduction by the University of Alcalá de Henares (UAH) in collaboration with Ginefiv and in Clinical Genetics by the University of Alcalá de Henares (UAH). License: 3316-CV.