PMC10214067_01
Endoscopic view of the stenosis in the second portion of the duodenum.
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The patient proceeded to an upper endoscopy, which revealed an impassable D2 stenosis with D1 dilation and bilious reflux (Figure 1).
CT scan in axial plan showing the duodenal compression between the aorta and superior
mesenteric artery, with a narrowed AMD 3.5 mm.
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The aortomesenteric angle (AMA) and aortomesenteric distance (AMD) were 12  (normal range, 38 -65 ) and 3.5 mm (normal range, 10-28 mm), respectively (Figures 2 and 3).
The sagittal reconstruction contrast-enhanced CT image shows an AMA of 12.2 .
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The aortomesenteric angle (AMA) and aortomesenteric distance (AMD) were 12  (normal range, 38 -65 ) and 3.5 mm (normal range, 10-28 mm), respectively (Figures 2 and 3).
Axial plan showing narrowing between SMA and aorta: distance 3.7 mm, and a normal
aspect of the left renal vein.
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Moreover, a dilated posterior LRV and left lumbar ascending vein, without a dilation of the left gonadal vein was found, suggesting the diagnosis of the posterior NCP (Figure 4).
Axial and sagittal reconstruction contrast-enhanced CT scan showing the dilation of the
lumbar plexus (white arrow showing the posteriori left renal vein and its communication
with the ascending lumbar vein).
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