Syphilitic proctitis mimicking rectal cancer: A case report

Figure 1 Computed tomography of the abdomen shows a locally, inhomogenously and confoundedly thicken rectal wall (computed tomography value of 35 Hu). A: Sagittal reconstruction; B: Coronal reconstruction.

Figure 2 Colonoscopic findings. A, B: Colonoscopic findings indicate a rectal mass encircling the wall of the rectum; C: Follow-up colonoscopy after 3 wk reveals complete regression of the rectal mass.

Figure 3 Histological findings from colonoscopic biopsy specimen show diffuse extensive infiltration of a large number of lymphocytes, plasma cells and neutrophil granulocytes (HE staining). A: × 40; B: × 400.