Fig. 5From: Diffuse large B-cell lymphoma originating from the rectum and diagnosed after rectal perforation during the treatment of ulcerative colitis: a case reportImmunohistochemical examinations from the perforation site. Atypical lymphocytes are CD 20 positive (a), CD 10 positive (b), BCL-6 positive (c), and MUM-1 positive (d), (× 200)Back to article page