Tortuosity of veins on the chorial surface of the human placenta in abnormal states of pregnancy and development.
D005260:Female; D006801:Humans; D010920:Placenta / Q000098:blood supply*; D010922:Placenta Diseases / Q000473:pathology; D010923:Placenta Previa / Q000473:pathology; D006831:Polyhydramnios / Q000473:pathology; D011247:Pregnancy; D011248:Pregnancy Complications / Q000473:pathology*; D011272:Pregnancy, Multiple; D014680:Veins / Q000473:pathology*