title: Anal pain: an unusual presentation of ectopic pregnancy.
authors.forename: Camlyn
authors.initials: C
authors.lastname: Tan
authors.forename: Siang Hiong
authors.initials: SH
authors.lastname: Goh
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D010146:Pain / Q000175:diagnosis / Q000209:etiology*; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000175:diagnosis*; D012007:Rectum