--
Sue Davies
Program Director
Australian Institute of Ultrasound
-----Original Message-----
From: ultrasound@obgyn.net [mailto:ultrasound@obgyn.net] On Behalf Of
Terry J DuBose
Sent: Saturday, 25 January 2003 5:06 AM
To: Multiple recipients of list ULTRASOUND
Subject: Re: Two Yolk Sacs, one embryo
Folks, please take another look at Dr. Libardi's early embryo images...
be sure to scroll all the way to the bottom:
http://www.obgyn.net/us/us.asp?page=/us/present/0301/libardi_oneembryo
I have posted an image from a textbook that is very similar and
demonstrates the "double bleb" sign. Looks very similar. As the
machines get better and better, we are going to see more and more.
Peace, Terry J DuBose, M.S., RDMS
At Wed, 22 Jan 2003, Mário Libardi wrote:
>
>Terry and friends
>
>I'm worry about conjoined twins possibility in this case.During scan I
>can't separate the two yolk sacs.I agree that in some days the other
>embrio will appear.Very interesting your article about EHR and IG.In
>this case the EHR of the embrio is 119 bpm. Dr.Corda, the YS diameters
>is 3.7mm(embrio) and 3.5mm(non-embrio). The patient will return in
>January 31.I'll post the follow up.
>
>Regards
>
>Mário
>
>>> ----- Original Message -----
> From: Terry J. DuBose
> To: Multiple recipients of list ULTRASOUND
> Sent: Tuesday, January 21, 2003 9:23 PM
> Subject: Re: Two Yolk Sacs, one embryo
>
> My first thought is that if you wait 3-4 days, the other twin will
show up... I have seen cases where one twin was larger than the other by
up to 6 days... and their heart rates correlated with their CRL sizes
both in the acceleration and deceleration phases. Our hypothesis was
that when the cell mass split, one twin got a larger mass of cells.
Both were normal, but remained about a week different in size until
delivery. Check out this article:
>
> http://www.obgyn.net/english/pubs/features/dubose/ehr-age.htm
> particularly this image:
> http://www.obgyn.net/english/pubs/features/dubose/Image16.gif
>
> I also described this set of twins in detail in FETAL SONOGRAPHY, p.
> 151-154.
>
> Or you may need to watch for conjoined twins later.
>
> Either way, please follow this one, give us feed back... and get
> accurate measurement on the CRL and EHR over the next month.
> Interesting case.
>
> Good luck. Terry J DuBose.
>
> ultrasound@obgyn.net writes:
> > Patient with 25 years old, G2P1A0, LMP : 6 weeks and CRL 5 weks and
> 5 days . > >US findings:
> >Two yolk sacs side by side, but only one embryo identified.
> >
> >Opinions ?? Suggestions ???
> >
> >Regards
> >Mário Libardi, M.D.
> >Multimagem Ultra-sonografia
> >Botucatu - Sao Paulo
> >Brazil
>
> Peace, Terry J. DuBose, M.S., RDMS
> Assistant Professor & Director, Diagnostic Medical Sonography Program
> University of Arkansas for Medical Sciences, CHRP 4301 West Markham
> St. Mail Slot #563 Little Rock, Arkansas, 72205 USA
> 501-686-6510
> DuBoseTerryJ@UAMS.edu
> http://www.io.com/~dubose/
> http://www.uams.edu/CHRP/dmshome.htm
> http://www.obgyn.net/us/panel/panel.htm
--
Peace, Terry J DuBose, M.S., RDMS
University of Arkansas for Medical Science
Little Rock, Arkansas, USA
