Case of the Week #541

Moshe Bronshtein, MD

Affiliations: Professor of Obstetrics & Gynecology, Haifa, Israel.

Posting Dates: July 15, 2021 - July 31, 2021

Case report: The following images and videos show a striking finding seen at 15 weeks gestation of an otherwise uncomplicated pregnancy without significant past medical or family history. What does the structure labeled by yellow arrowheads represent?

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Video:

Video 01

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Answer

The finding shown represents physiologic transient fluid accumulation in the main fetal bronchi. In the color Doppler images, breathing flow through the bronchi can be seen. This finding can easily be confused as an anomaly despite being a normal process.

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