[Combined pregnancy].

Simultaneous intrauterine and ectopic pregnancy is a rare entity, with a difficult preoperative diagnosis, potentially dangerous for the mother and for the intrauterine pregnancy. A case of combined intra- and extrauterine pregnancy diagnosed at 5 weeks' menstrual dates in a 31-year-old woman non treated for infertility is described. Incidence, etiology, diagnosis and treatment of this uncommon complication are discussed.