1. GI conference 20111017

2. Case 3 Stomach and liver F/69 S-2011-14450

7. Stomach, distal gastrectomy: Tubular adenocarcinoma, moderately differentiated Tubular adenocarcinoma, moderately differentiated 1) Location: Low body, posterior wall 2) Tumor gross type: Early gastric carcinoma, type IIa + IIc 3) Histologic type by Lauren classification: Intestinal 4) Tumor size: 4.0 cm x 3.2 cm 5) Depth of invasion: Tumor invades submucosa (sm3)(pT1b) 6) No tumor identified at proximal and distal resection margins 7) Lymphatic invasion: Present, frequent 8) Vascular invasion: Not identified 9) Regional lymph nodes: No metastasis in 31 regional lymph nodes (0/31, pN0) No metastasis in 31 regional lymph nodes (0/31, pN0) Diagnosis

11. Liver, wedge resection: Hemangioma with myxoid degeneration Hemangioma with myxoid degeneration Diagnosis

12. Case 4 Stomach F/50 S-2011-14379 ESD S-2011-14379 ESD S-2011-14735 Biopsy S-2011-15278 LATG S-2011-15278 LATG

17. Diagnosis Stomach, mid body, anterior wall, endoscopic submucosal dissection: Tubular adenocarcinoma, moderately differentiated Tubular adenocarcinoma, moderately differentiated 1) Tumor size: 5.0 cm x 3.4 cm 2) Depth of invasion: Invades lamina propria (pT1a) 3) Margins of resection ① Anterior, posterior and distal margins are involved by tumor ① Anterior, posterior and distal margins are involved by tumor ② No tumor identified at proximal and deep resection margins (safety margin: proximal 0.1 cm, deep 0.03cm) ② No tumor identified at proximal and deep resection margins (safety margin: proximal 0.1 cm, deep 0.03cm) 4) Histologic type by Lauren classification: Intestinal 5) Tumor gross type: EGC-IIa 6) Lymphatic invasion: Not identified 7) Vascular invasion: Not identified

19. Diagnosis A. Stomach, mid body, proximal margin, endoscopic biopsy: Adenocarcinoma, poorly differentiated Adenocarcinoma, poorly differentiated B. Stomach, mid body, posterior margin, endoscopic biopsy: Adenocarcinoma, poorly differentiated Adenocarcinoma, poorly differentiated C. Stomach, mid body, posterior margin, endoscopic biopsy: Adenocarcinoma, poorly differentiated Adenocarcinoma, poorly differentiated D. Stomach, mid body, distal margin, endoscopic biopsy: Chronic gastritis with intestinal metaplasia Chronic gastritis with intestinal metaplasia E. Stomach, mid body, posterior margin, endoscopic biopsy: Chronic gastritis with intestinal metaplasia Chronic gastritis with intestinal metaplasia

25. Diagnosis Stomach, total gastrectomy: Tubular adenocarcinoma, poorly differentiated Tubular adenocarcinoma, poorly differentiated 1) Location: Mid Body, lesser curvature 2) Tumor gross type: Early gastric carcinoma, type IIb 3) Histologic type by Lauren classification: Mixed 4) Tumor size: 4.8 cm x 3.8 cm 5) Depth of invasion: Tumor invades lamina propria (pT1a) 6) Margins of resection: No tumor identified at proximal and distal resection margins (safety margin: proximal 1.9 cm, distal 11 cm) margins (safety margin: proximal 1.9 cm, distal 11 cm) 7) Lymphatic invasion: Not identified 8) Vascular invasion: Not identified 9) Regional lymph nodes: No metastasis in 37 regional lymph nodes (0/37, pN0) (perigastric: 0/30, mesenteric LN: 0/1, LN#8: 0/2, LN#2: 0/4)