1. Measurement of SM invasion depth by ‘Committee of Management for sm Carcinoma Project’ of the Japanese Society for Cancer of the Colon and Rectum
J Gastroenterol 2004;39:
A. Pedunculated SICC
B. Nonpedunculated SICC
C. Nonpedunculated SICC,
mm: not indentified
Base line
Level 2 by Haggitt
Above the baseline: as a head invasion
Muscularis mucosae
Superficial aspect of submucosal invasive colorectal carcinoma
SICC: submucosal invasive colorectal carcinoma

2. Digestive Endoscopy 2004;16:S161-S164

3. Gastroenterology ;89:
Level 0: adenoma with intramucosal carcinoma (in situ)
Level 1: penetration of malignant glands through the muscularis mucosa into the submucosa, within the polyp head
Level 2: the same submucosal invasion, but present at the junction of the head to the stalk
Level 3: invasion of the stalk
Level 4: invasion of the stalk’s base at the connection to the colonic wall