Ultrasonographic detection of fetal soft tissue swelling in the midtrimester: correlation with trisomy 18.
D000328:Adult; D000649:Amniocentesis; D002902:Chromosomes, Human, 16-18; D004487:Edema / Q000175:diagnosis*; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011296:Prenatal Diagnosis; D014314:Trisomy; D014463:Ultrasonography