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sitis inversus

Posted by Patricia on May 20, 1999 at 09:09:13
  My husband has sitis inversus and we understand everything about it
except... what, if any, is the cause of it? We have been told that he is the mirror image of a twin that did not develop? Any info would be
Thank you much,

Posted by CCF CARDIO MD - CRC on May 20, 1999 at 11:57:29
Dear Patricia,
Thank you for your question.  Situs inversus is a rare condition where the internal organs are a "mirror image" of the normal configuration.  This is different from dextrocardia where only the heart is on the opposite side of the body.  There are no adverse effects to these conditions (except perhaps to the doctor who can't understand why he can't hear the heart).  It is not entirely clear why these conditions occur during development but it is not due to being one half of a twin pair.  (if this were the case half of all twins would have situs inversus).  
I hope you find this information useful.  Information provided in the heart forum is for general purposes only.  Only your physician can provide specific diagnoses and therapies.  Please feel free to write back with additional questions.
If you would like to make an appointment at the Cleveland Clinic Heart Center, please call 1-800-CCF-CARE or inquire online by using the Heart Center website at www.ccf.org/heartcenter.  The Heart Center website contains a directory of the cardiology staff that can be used to select the physician best suited to address your cardiac problem.

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