TheFetus.net

Case of the Week #517

Moshe Bronshtein

Affiliation:  Haifa, Israel

Posting Dates: March 26, 2020 - April 16, 2020

Case report: A woman presented at 15 weeks of pregnancy. The mother's history was unremarkable and the pregnancy was considered low risk.  The fetal heart examination was done via transvaginal ultrasound with the fetus in vertex presentation.

Image 1
Image 1: Transabdominal ultrasound image
Image 2
Image 2: Transvaginal ultrasound image
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Answer

We present a case of situs inversus.

Using the left hand as a model of the fetal situs in transvaginal ultrasound (Figure 1), our images show the stomach and heart on the right side of the fetus.

Left hand rule of thumb in transvaginal scanning
Figure 1: The left hand can be used as a model of the fetal situs in transvaginal ultrasound.
Image 3
Figure 2: The right hand can be used as a model of the fetal situs in transabdominal ultrasound.

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