Case of obscure-overt gastrointestinal bleeding after pediatric liver transplantation explained by endoscopic ultrasound

Figure 1 Lesions in the duodenum. A: Depressed area of 2 cm, covered with mixed hyperemic and white mucosa, seen at EGDS; B: Round hypo-anechoic areas of 5 mm in diameter, compatible with vascular structures (varices), in the duodenal mucosa; C: Periduodenal anechoic lesions compatible with collaterals.

Figure 2 Transhepatic portography showing a severe anastomotic stenosis (arrow), and filling of multiple periduodenal varices (arrow head).

Figure 3 Normal endoscopic appearance of the bulb (A) and normal stratification of the duodenal layers (B).