Vascular tumors of the placenta.
D000328:Adult; D000013:Congenital Abnormalities; D005260:Female; D005313:Fetal Death; D005315:Fetal Diseases / Q000151:congenital; D006391:Hemangioma; D006801:Humans; D007231:Infant, Newborn; D007744:Obstetric Labor Complications; D010920:Placenta; D011247:Pregnancy; D011248:Pregnancy Complications