Makinde O O, Ogunniyi S O
Department of Obstetrics, Gynaecology and Perinatology, Faculty of Health Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria.
Int J Gynaecol Obstet. 1990 Dec;33(4):365-7. doi: 10.1016/0020-7292(90)90523-n.
Three cases of unilateral tubal twin pregnancies and four cases of simultaneous bilateral tubal pregnancy recorded in a Nigerian University Teaching Hospital were reviewed. The incidences were 1 in 68 and 1 in 51 ectopic pregnancies respectively. High twinning rates within the environment and tubal damage from pelvic infections were considered as possible etiologic factors.