PMC6393701_01
Vascular connections to the heart a: Confluence of azygous vein (AV) and superior vena cava (SVC) entering the right atrium b: Right sided descending aorta and the azygous vein. RA = Right atrium.
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The IVC appeared interrupted with azygous vein continuation (Fig. 1a) to the right sided superior vena cava (SVC). The aortic arch was right sided with uninterrupted flow (Fig. 1b).
Transverse sections of the fetal abdomen showing a: fetal stomach (S) and small bowel (SB) on the right side of the abdomen b: fetal large bowel (LB) on the left side of the abdomen.
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A repeat ultrasound at 32 weeks noted small bowel loops to be on the right side of the fetal abdomen and the large bowel loops were arranged to the left (Fig. 2 a and b).
MRI imaging of 39 week fetus showing the bowel non-rotation in a coronal plane. SB = small bowel. LB = large bowel. LT = left side of the fetus. RT = right side of the fetus.
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A fetal MRI performed at 39 weeks also suggested absent spleen, gall bladder and confirmed non-rotation (Fig. 3).
Barium study of the neonatal bowel a: the stomach (S) within the right upper abdomen b: the duodenal-jejunal junction (DJJ) located right of the midline c: the jejunal loops (JL) predominantly right sided d: the sigmoid colon (SC) and opacified large bowel on the left.
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Postnatal barium study results showed the stomach within the right upper abdomen (Fig. 4a), the duodenal-jejunal junction located right of the midline (Fig. 4b), the jejunal loops predominantly right sided (Fig. 4c) and the sigmoid colon and opacified large bowel on the left (Fig. 3d).