Case 1
Diagnosis : A. Colon, transverse, mid, endoscopic mucosal resection: Tubular adenoma with low grade dysplasia with 1) Size: 1.2 x 1.0 x 0.7 cm 2) Negative resection margin (Safety margin: 0.2 cm) B. Colon, sigmoid, colonoscopic biopsy: Tubular adenoma with low grade dysplasia C. Rectum, 10cm from anal verge, polypectomy: Tubular adenoma with low grade dysplasia D. Rectum, 7cm from anal verge, polypectomy: Tubular adenoma with low grade dysplasia
Case 2
Diagnosis : A. Colon, sigmoid, colonoscopic biopsy: Chronic inflammation B. Rectum, colonoscopic biopsy: Chronic inflammation Diagnosis : Stomach, antrum, endoscopic biopsy: Chronic gastritis (no granuloma) Diagnosis : Duodenum, second portion, endoscopic biopsy: Chronic inflammation (no granuloma)
Diagnosis : Colon, sigmoid, sigmoidectomy: Crohn's disease, consistent with Lymph node, regional, sigmoidectomy: Reactive change (x3)
Case 3
Diagnosis : A. Colon, descending, polypectomy: Tubular adenoma with low grade dysplasia B. Colon, sigmoid, colonoscopic biopsy: Tubular adenoma with low grade dysplasia C. Colon, sigmoid, colonoscopic biopsy: Chronic inflammation
Diagnosis : Sigmoid colon, sigmoidectomy: Fibrous adhesion with chronic inflammation
Case 4
CD20
CD3
Bcl-2
Bcl-6
MUM-1
Ki-67
Diagnosis : Colon, ascending, proximal, colonoscopic biopsy: Diffuse large B-cell lymphoma
Case 5
Colon, sigmoid, colonoscopic biopsy: Dysplasia, low grade (History of ulcerative colitis)
A. Colon, 75cm from anal verge, colonoscopic biopsy: Chronic inflammation B. Colon, 72cm from anal verge, colonoscopic biopsy: Ulcer with acute and chronic inflammation C. Colon, 38cm from anal verge, colonoscopic biopsy: Chronic inflammation D. Colon, 30cm from anal verge, colonoscopic biopsy: Chronic inflammation