RESUMEN
To our knowledge, implantation into the uterine muscle wall is one of the rare form of ectopic pregnancy, with only 16 cases reported until 1995. The early diagnosis depends upon the sonographic finding of intramural gestational sac-like growth and persistent high beta human chorionic gonadotropin (beta-hCG) levels after dilatation and curettage. But, nobody can't exclude intramural pregnancy in case that associated with adenomyosis in uterus in spite of negative beta-hCG. Hsieh et al. and Dousias et al. mentioned 2 cases of such situation with negative beta-hCG result. And confirmative diagnosis depends upon the pathologic finding for specimen obtained from laparoscopic or explorative hysterotomy. The authors have experienced one case of intramural pregnancy in uterus and report our case with a brief review of literature.