Re: Conjoined twins with different genders

From: Wolfgang Moroder, M.D. (wolfgang.moroder@tin.it)
Sat Oct 18 07:24:23 2003


Terry, I don't think we can talk about prevalence of "heterogender" monochorionic twins in literature since the case published by Vav Souter on the NEJM is the first to my knowledge. Thank you for publishing my images on the Ultrasound section as a Interactive Informal Case here:

http://www.obgyn.net/us/us.asp?page=/us/present/1003/moroder_monochorionic

I'd like to remember the fact that the paired yolk sac sign (8 sign) is pathognomonic of a monochorionic pregnancy and quite common. The yolk sacs in monochorionic pregnancy are located in one space which is the extraembryonic coelom and sometimes, who knows why?, they seem to be attracted by each other... even if they are of the same sex! Ciao Wolfgang

At Thu, 16 Oct 2003, Terry J. DuBose wrote: >
>So what is the prevelence of these hetrogender twins?... in the literature? Terry
>
>ultrasound@obgyn.net writes:
>>In a message dated 10/16/2003 4:53:18 PM Eastern Daylight Time, vsouter@yahoo.com writes:
>>
>>> We postulated a fusion event as the cause of our unusual twins. Rowena Spencer has is a proponent of fusion rather than
>>> fission as the cause of amny conjoined twins.
>>
>>Is Rowena still working?
>>
>>Joe P.
>
>--
>Terry J. DuBose, M.S., RDMS, FSDMS, FAIUM
>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/dms/default.asp
>http://www.obgyn.net/us/panel/panel.htm
>

--
Wolfgang Moroder, MD
Prenatal Unit
Bolzano General Hospital  Italy



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