case_images: PMC4881242_01
case_images: Anal canal endoscopy (reverse observation). Elevated lesion is observed on Herrmann's line of the anus.
case_images: cro-0009-0280-g01.jpg
case_images: PMC4881242_01_cro-0009-0280-g01.jpg
case_images: F1
case_images: Lower gastrointestinal endoscopy identified an elevated lesion centered on Herrmann's line in the anus (fig. 1).
case_images: Pelvic computer tomography. a Mucosal thickening with contrast effect is observed in the rectum (arrow). b Swelling of the right inguinal lymph node is noted (arrow).
case_images: cro-0009-0280-g02.jpg
case_images: PMC4881242_01_cro-0009-0280-g02.jpg
case_images: F2
case_images: Pelvic computed tomography (CT) (fig. 2) revealed mucosal thickening with a contrast effect in the rectum, as well as swelling of the right inguinal lymph node and pararectal lymph nodes.
case_images: Pelvic magnetic resonance imaging (sagittal plane). Wall thickening with gadolinium enhancement is seen in the rectum (Rb-P). No infiltration beyond the outer membrane of the rectum is observed.
case_images: cro-0009-0280-g03.jpg
case_images: PMC4881242_01_cro-0009-0280-g03.jpg
case_images: F3
case_images: Pelvic magnetic resonance imaging (fig. 3) also confirmed wall thickening with gadolinium enhancement in the rectum (Rb-P), which was consistent with the pelvic CT finding.