Diffuse hemolymphangioma of the rectum: A report of a rare case

Figure 1 Colonoscopy and endoscopic ultrasonography results. A, B: Colonoscopy showed an extensive hypervascular submucosal lesion, with tortuous submucosal veins and nodular mucosa; C: Endoscopic ultrasonography revealed an extensive anechoic mass with clear demarcation.

Figure 2 Magnetic resonance imaging showed a significant thickness of the rectal wall, extending to the distal edge of the anus, with a narrow lumen (arrows). A, B: Horizontal plane imaging; C, D: Sagittal plane imaging; E, F: Coronal plane imaging.

Figure 3 Diffuse colorectal proliferative lesions with no ascites or peritoneal dissemination were found during the operation.

Figure 4 The rectal mass weighed 840 g and measured 20 cm × 8 cm × 8 cm, presenting as a cavernous, soft and compressible tumor.

Figure 5 The tumor was composed of lymphatic and blood vessels mainly at the submucosa, occupied the entire wall (A), and extending into the surrounding fatty tissues (B).