The volumetric growth of the human placenta: a longitudinal ultrasonic study.
Twelve patients were examined by ultrasound at biweekly intervals from 23 weeks of menstrual age until term. Placental volumes were calculated with four ultrasonic placental cross sections. In 10 patients placental volume reached its maximum well before the end of pregnancy. The conclusion is drawn that the human placenta stops growing before the end of pregnancy.
D000328:Adult; D005260:Female; D006128:Growth; D006801:Humans; D010920:Placenta / Q000502:physiology*; D011247:Pregnancy; D014463:Ultrasonography