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Re: Dec'98 Case of the Month; 7th Jan 99 From: DuBose, Terry (DuboseTerryJ@exchange.uams.edu) Thu Jan 7 11:02:58 1999 Messages sorted by: [ date ][ thread ][ subject ][ author ] Next message: M.C. Scarboro RNC RDMS: "Re: clinical problem" Previous message: James S Smeltzer MD: "Re: clinical problem" Dear Dr. Anthony, et al. Increased nuchal sonolucency evaluation is considered more appropriate in the 1st trimester or between 10 and 14 weeks. The primary reason for this is that these sonolucencies often resolve by 18-20 weeks. Also, later in pregnancy extension and flexion of the cervical spine can affect the measurement as well as fetal weight. The increase nuchal sonolucency has been associated with several chromosome abnormalities, including trisomies 21, 18, and 13. Usually the upper limit between the 10th and 14th weeks is 3mm. If you got to the Ultrasound forum at http://forums.obgyn.net/ultrasound/ on the http://wwweb, and at the bottom, do a search on "nuchal" you will find quite a lot of discussion on this topic. Many of the messages also give references. Peace, Terry J. DuBose, M.S., RDMS, FAIUM University of Arkansas for Medical Sciences, USA http://www.io.com/~dubose/ http://www.uams.edu/CHRP/dmshome.htm http://www.obgyn.net/us/panel/dubose_us.htm --- > -----Original Message----- > From: JOE ANTONY [SMTP:jscan@md3.vsnl.net.in] > Sent: Thursday, January 07, 1999 4:01 AM > To: obgyn-US@OBGYN.net > Subject: Dec'98 Case of the Month; 7th Jan 99 > > Dear Sir, Besides cystic hygroma and down's syndrome, what other d/d are > there for increased nuchal thickness? > Besides, upto what gestational age should one measure nuchal > thickness(n.t.)? > Also, please send a table showing normal nuchal thickness for a specific > gest. age. > I donot have any literature on this subject. > Regards, DR JOE ANTONY, INDIA. Next message: M.C. Scarboro RNC RDMS: "Re: clinical problem" Previous message: James S Smeltzer MD: "Re: clinical problem"

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