RT Book, Section
A1 Mastrobattista, Joan M.
A1 Toy, Eugene C.
A2 Fleischer, Arthur C.
A2 Toy, Eugene C.
A2 Lee, Wesley
A2 Manning, Frank A.
A2 Romero, Roberto J.
SR Print(0)
ID 1106704908
T1 PLACENTA, CORD, AND MEMBRANES
T2 Sonography in Obstetrics and Gynecology: Principles & Practice, 7e
YR 2015
FD 2015
PB McGraw-Hill Education
PP New York, NY
SN 9780071547727
LK obgyn.mhmedical.com/content.aspx?aid=1106704908
RD 2024/04/20
AB DefinitionsBasal  plate:  maternal  surface  of  placenta.Chorioangioma:  benign  tumors  arising  from  the  fetal  surface  of  the  placenta.Chorionic  plate:  fetal  surface  of  placenta.Complete  placenta  previa:  occurs  when  the  placenta  completely  covers  the  internal  os.Extrachorial  placenta  (circummarginate  and  circumvallate):  attachment  of  placental  membranes  to  the  fetal  surface  of  the  placenta  rather  than  the  villous  placental  margin.Low-lying  placenta/low  implantation:  occurs  when  the  inferior  placental  edge  is  within  2  cm  of  the  internal  cervical  os.Marginal  placenta  previa:  occurs  when  the  placenta  extends  over  the  cervix  and  abuts  the  internal  cervical  os.Partial  placenta  previa:  occurs  when  the  placenta  partially  covers  the  internal  os.Placental  abruption:  separation  of  a  normally  implanted  placenta.Succenturiate  placenta:  the  presence  of  one  or  more  accessory  lobes  separate  from  the  main  placental  body.Trophotrophism:  a  dynamic  process  of  placental  remodeling  where  areas  with  poor  vascularity  atrophy  and  areas  of  good  perfusion  grow.Uterine  synechia  (amniotic  sheets):  broad-based  tissue  that  extends  into  the  amniotic  cavity  but  is  external  to  the  amnion  and  chorion.Vasa  previa:  occurs  when  fetal  vessels  that  run  in  the  fetal  membranes  cross  the  internal  cervical  os.