PMC5736958_01
A 61-year-old male presented with symptoms of upper GI obstruction. Ultrasound of abdomen shows distension of stomach (A) and duodenum (short single arrow) due to compression of 3rd part of duodenum (long arrow) between SMA (double arrows) and aorta (*)
ejohg-04-058-g001.jpg
PMC5736958_01_ejohg-04-058-g001.jpg
F1
Ultrasound examination revealed gastric and duodenal dilatation (Fig. 1).
Sagittal reconstructed CT scanning of the same patient as Figure 1 shows narrowed AMA of about 20  between SMA (double arrows) and aorta (*). Narrowed 3rd part of duodenum is seen (long arrow)
ejohg-04-058-g002.jpg
PMC5736958_01_ejohg-04-058-g002.jpg
F2
There was abrupt narrowing of 3rd part of duodenum with dilatation of stomach and proximal duodenum (up to 2nd part) (Figs 2 to 4).
Sagittal reconstructed CT scanning of the same patient as Figure 1 shows reduced AMD of about 8 mm between SMA (double arrows) and aorta (*). Narrowed 3rd part of duodenum is seen (long arrow)
ejohg-04-058-g003.jpg
PMC5736958_01_ejohg-04-058-g003.jpg
F3
There was abrupt narrowing of 3rd part of duodenum with dilatation of stomach and proximal duodenum (up to 2nd part) (Figs 2 to 4).
Axial CT scanning of the same patient shows markedly reduced AMD of about 5 mm between SMA (long arrow) and aorta (*) with distension of proximal duodenum (short arrow)
ejohg-04-058-g004.jpg
PMC5736958_01_ejohg-04-058-g004.jpg
F4
There was abrupt narrowing of 3rd part of duodenum with dilatation of stomach and proximal duodenum (up to 2nd part) (Figs 2 to 4).