Clinical Dysmorphology

Skip Navigation LinksHome > July 2004 - Volume 13 - Issue 3 > Trisomy 16 in a mid-trimester IVF foetus with multiple abnor...
Clinical Dysmorphology:
Case Reports

Trisomy 16 in a mid-trimester IVF foetus with multiple abnormalities

Seller, Mary Ja; Fear, Claudineb; Kumar, Ajithc; Mohammed, Shehlac

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An 18 week foetus with multiple system abnormalities was found to have full trisomy 16. This appears to be only the third reported case surviving into mid-gestation; typically, this common aneuploidy dies post-implantation. Similarities exist in the abnormalities found in the three cases suggesting that there is a ‘surviving’ trisomy 16 phenotype. It is characterised by: absent hemidiaphragm, pulmonary hypoplasia/aplasia, major cardiac defect, small chest, vertebral and rib defects, cystic kidneys, absent gall bladder, multiple spleens and imperforate anus, together with cleft palate, nuchal webbing/cystic hygroma, microcephaly, marked dysmorphic facial features and dorsiflexed great toe.

© 2004 Lippincott Williams & Wilkins, Inc.


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