TY  - CHAP
M1  - Book, Section
TI  - SONOGRAPHY IN MULTIPLE GESTATION
A1  - Matias, Alexandra
A1  - Jeanty, Philippe
A1  - Toy, Eugene C.
A2  - Fleischer, Arthur C.
A2  - Toy, Eugene C.
A2  - Lee, Wesley
A2  - Manning, Frank A.
A2  - Romero, Roberto J.
PY  - 2015
T2  - Sonography in Obstetrics and Gynecology: Principles & Practice, 7e
AB  - DefinitionsMonozygotic  twins:  a  pregnancy  of  2  fetuses  derived  from  the  same  zygote  that  divided  between  the  day  of  fertilization  and  the  14th  day.  They  can  have  phenotypic  and  genotypic  differences  and  can  have  either  a  dichorionic  or  a  monochorionic  placentation.Dizygotic  twins:  a  pregnancy  of  2  fetuses  derived  from  2  different  zygotes,  resulting  from  the  fertilization  of  2  oocytes  from  the  same  cycle.  They  always  have  a  dichorionic  placentation.Chorionicity:  type  of  placentation  in  cases  of  multiple  pregnancy  defined  by  the  number  of  chorions.Lambda  sign:  sonographic  sign  resulting  from  the  juxtaposition  of  2  layers  of  amnion  and  2  layers  of  chorion  in  a  dichorionic  twin  pregnancy.  
SN  - 
PB  - McGraw-Hill Education
CY  - New York, NY
Y2  - 2024/04/19
UR  - obgyn.mhmedical.com/content.aspx?aid=1106706170
ER  -