title: Bilateral tubal and twin pregnancies in Ile-Ife, Nigeria.
abstract: 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.
authors.affiliation: Department of Obstetrics, Gynaecology and Perinatology, Faculty of Health Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria.
authors.forename: O O
authors.initials: OO
authors.lastname: Makinde
authors.forename: S O
authors.initials: SO
authors.lastname: Ogunniyi
mesh_terms: D005260:Female; D006801:Humans; D015994:Incidence; D009549:Nigeria / Q000453:epidemiology; D011247:Pregnancy; D011272:Pregnancy, Multiple; D011274:Pregnancy, Tubal / Q000453:epidemiology*; D014427:Twins