Mono/Di? SO confused!

Discussion in 'Pregnancy Help' started by faerieprncs, Jan 10, 2009.

  1. faerieprncs

    faerieprncs Well-Known Member

    Hi, DH and I just found out we are having twins. I am almost 13 weeks along. I've been reading these forums soaking up info like a sponge, but one thing that confuses me is that some people's signature blocks say that they are having "mono/di boys!"...I thought that mono meant identical and di meant fraternal...so how can your twins be identical/fraternal??? Or am I missing something here?

    Thanks in advance!
     
    faerieprncs, Jan 10, 2009
    #1
  2. Kaelan

    Kaelan Well-Known Member

    Smiles. i am having mono/di boys. Mono meaning they are sharing one placenta instead of each having thier own, and di meaning they are each in thier own amniotic sacs inside the placenta they share. And yes, they are identical. Mo/mo twins share both the same placenta and only one sac and are also ID.


    24W0D mono/di boys
     
    Kaelan, Jan 10, 2009
    #2
  3. lianyla

    lianyla Well-Known Member

    Congratulations!!! Scan in a ultasound pic and we can help you out!! One black hole means mono chorionic (placenta) di= 2 chorion (separating membrane). mono-di.
     
    lianyla, Jan 10, 2009
    #3
  4. hrm17

    hrm17 Well-Known Member

    the first word refers to the placenta (chorion), the second to the amniotic sac.

    monochorionic/monoamniotic (mono/mono) = one placenta, one sac (rare)
    monochorionic/diamniotic (mono/di) = one placenta, two sacs
    dichorionic/diamniotic (di/di) = two placentas, two sacs

    Fraternal twins are always di/di. Identicals can be in any of these categories; it depends on when the egg splits.
     
    hrm17, Jan 11, 2009
    #4
  5. Heathermomof5

    Heathermomof5 Well-Known Member

    QUOTE(hrm17 @ Jan 11 2009, 06:06 AM) [snapback]1141824[/snapback]
    the first word refers to the placenta (chorion), the second to the amniotic sac.

    monochorionic/monoamniotic (mono/mono) = one placenta, one sac (rare)
    monochorionic/diamniotic (mono/di) = one placenta, two sacs
    dichorionic/diamniotic (di/di) = two placentas, two sacs

    Fraternal twins are always di/di. Identicals can be in any of these categories; it depends on when the egg splits.

    what she said!!

    and CONGRATULATIONS on your babies!!!!!!
     
    Heathermomof5, Jan 11, 2009
    #5
  6. kdanielleflowers

    kdanielleflowers Well-Known Member

    QUOTE(hrm17 @ Jan 11 2009, 05:06 AM) [snapback]1141824[/snapback]
    the first word refers to the placenta (chorion), the second to the amniotic sac.

    monochorionic/monoamniotic (mono/mono) = one placenta, one sac (rare)
    monochorionic/diamniotic (mono/di) = one placenta, two sacs
    dichorionic/diamniotic (di/di) = two placentas, two sacs

    Fraternal twins are always di/di. Identicals can be in any of these categories; it depends on when the egg splits.

    Perfect and simple explination!
     
    kdanielleflowers, Jan 11, 2009
    #6
  7. doublej's

    doublej's Well-Known Member

    Thanks for answering that one for me as well. Kinda was wondering???
     
    doublej's, Jan 11, 2009
    #7
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