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Re: Conjoined twins with different gendersFrom: 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:
>
-- Wolfgang Moroder, MD Prenatal Unit Bolzano General Hospital Italy
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