RESUMO
First-trimester ultrasound examination is of value to establish dates or assess fetal viability in cases of bleeding but provides limited information on the well-being of the fetus. At between 16 and 20 weeks' gestation, examination of fetal anatomy allows many abnormalities to be detected. Third-trimester ultrasound examination is predominantly for follow up of growth and normal development or of any abnormalities seen earlier.
RESUMO
We described two patients with heterotopic pregnancy. In one patient the transabdominal sonographic findings were non-specific and laparoscopy was required for diagnosis. In the second patient transabdominal sonographic findings suggested a diagnosis of heterotopic pregnancy. Endovaginal sonography confirmed this by allowing visualization of the live extrauterine gestation.