Early transient prenatal ultrasound features of choanal atresia

Moshe Bronshtein*, Zvi Leibovitz, Gaby Laham, Sandro Egenburg, Igal Wolman, Ron Bardin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We present a case series of early second-trimester prenatal ultrasound (US) features in 4 fetuses with a confirmed diagnosis of choanal atresia. The clinical characteristics and outcomes evaluated included prenatal US findings, genetic analyses, postmortem autopsies (2 cases), and computed tomographic findings. A transient large nasal cavity was detected by US in all 4 fetuses. This finding disappeared a few weeks later. Three cases were unilateral choanal atresia, and 1 was bilateral. Transient enlargement of the nasal cavity in early pregnancy appears to be a US sign of choanal atresia.

Original languageEnglish
Pages (from-to)2439-244400
Number of pages241962
JournalJournal of Ultrasound in Medicine
Issue number10
StatePublished - Oct 2018


  • CHARGE syndrome
  • Choanal atresia
  • Early second trimester
  • Obstetrics (detailed fetal anatomy)
  • Obstetrics (second trimester)
  • Prenatal diagnosis
  • Ultrasound features


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