Protein-losing enteropathy caused by a jejunal ulcer after an internal hernia in Petersen's space: A case report

Figure 1 Results of computed tomography scans. A: The superior mesenteric vein (indicated with white arrows) twisted around the superior mesenteric artery (indicated with black arrows) in a spiral-like pattern; B: Venous congestion in the small intestine mesentery.

Figure 2 Results of double-balloon enteroscopy and amidotrizoic acid radiography. A: Double-balloon enteroscopy revealed a jejunal ulcer with circumferential stenosis and continuous erosion; B: Amidotrizoic acid radiography showed two stenoses (indicated with white arrows) with poor dilation between the two lesions (black arrows) and adhesion on the anal side (two-way arrows).

Figure 3 Macroscopic and microscopic findings. A: Findings revealed a deep ulcer with stenosis and a shallow ulcer in continuous erosion, along with normal mucosa marked with Indian ink on the oral side; B: Pathological findings revealed a deep-mining ulcer (to the muscularis propria) with collagen hyperplasia; C: A shallow ulcer with epithelial loss; D: An abscess, with a shallow ulcer with chronic inflammatory cell infiltration from the mucosa to the subserosa; E: A shallow ulcer with chronic inflammatory cell infiltration from the mucosa to the subserosa.