Multiple hidden vessels in walled-off necrosis with high-risk bleeding: Report of two cases

Figure 1 Perioperative images. A: Perioperative computed tomography (CT) angiogram of the female patient; B and C: Perioperative magnetic resonance cholangiopancreatography and CT images of the male patient.

Figure 2 Endoscopic ultrasound images of the lesion in each patient. A: The size and high-density shadows (arrow) of the lesion in the female on endoscopic ultrasound (EUS); B: The size and high-density shadows (arrow) of the lesion in the male on EUS.

Figure 3 Direct observation of multiple hidden vessels under endoscopy. A: Multiple hidden vessels in the female; B: Multiple hidden vessels in the male.

Figure 4 Retrospective observation of computed tomography images. A: Radiological signs of nonliquid contents and some cord-like shadows (arrow) in the female; B: Solid debris (arrow) in the male.