Bleeding duodenal hemangioma: Morphological changes and endoscopic mucosal resection

Figure 1 A red protruding lesion (20 mm in diameter) with spontaneous bleeding was found in the superior duodenal angle.

Figure 2 A blue, nonpedunculated, submucosal tumor-like lesion. The tumor is almost entirely covered by mucosa.

Figure 3 Duodenal hemangioma and endoscopic mucosal resection. A: EMR was performed after the mucosa was sufficiently elevated by local injection; B: The mucosal defect; C: The mucosal defect was closed using the clipping technique, and the procedure was completed; D: A resected specimen obtained by EMR. EMR: Endoscopic mucosal resection.

Figure 4 Pathological specimen. A: A magnified pathological image of the resected specimen (10 ×); B: A magnified pathological image of the central part of the 20 mm × 12 mm tumor, which shows proliferation of various sized capillary lumens (100 ×).