, Institut National du Cancer (INCa) Available at www.e-cancer.fr, 2015.

S. Coverlizza, M. Risio, A. Ferrari, C. M. Fenoglio-preiser, and F. P. Rossini, Colorectal adenomas containing invasive carcinoma. Pathologic assessment of lymph node metastatic potential, Cancer, vol.64, pp.1937-1947, 1989.

B. C. Morson, J. E. Whiteway, E. A. Jones, F. A. Macrae, and C. B. Williams, Histopathology and prognosis of malignant colorectal polyps treated by endoscopic polypectomy, Gut, vol.25, pp.437-444, 1984.

K. Tominaga, Predictive histopathologic factors for lymph node metastasis in patients with non pedunculated submucosal invasive colorectal carcinoma, Dis. Colon Rectum, vol.48, pp.92-100, 2005.

R. Kikuchi, Management of early invasive colorectal cancer. Risk of recurrence and clinical guidelines, Dis. Colon Rectum, vol.38, pp.1286-1295, 1995.

D. K. Sohn, Histopathological risk factors for lymph node metastasis in submucosal invasive colorectal carcinoma of pedunculated or semi pedunculated type, J. Clin. Pathol, vol.60, pp.912-915, 2006.

S. Rasheed, Can depth of tumour invasion predict lymph node positivity in patients undergoing resection for early rectal cancer? A comparative study between T1 and T2 cancers, Colorectal Dis, vol.10, pp.231-238, 2008.

K. S. Chok and W. L. Law, Prognostic Factors Affecting Survival and Recurrence of Patients with pT1 and pT2 Colorectal Cancer, World J. Surg, vol.31, pp.1485-1490, 2007.

W. L. Fang, Metastatic potential in T1 and T2 colorectal cancer, Hepatogastroenterology, vol.52, pp.1688-1691, 2005.

S. Bayar, R. Saxena, B. Emir, and R. R. Salem, Venous invasion may predict lymph node metastasis in early rectal cancer, Eur. J. Surg. Oncol, vol.28, pp.413-417, 2002.

P. J. Sitzler, F. Seow-choen, Y. H. Ho, and A. P. Leong, Lymph node involvement and tumor depth in rectal cancers: an analysis of 805 patients, Dis. Colon Rectum, vol.40, pp.1472-1476, 1997.

T. Watanabe, Japanese Society for Cancer of the Colon and Rectum (JSCCR) Guidelines 2014 for treatment of colorectal cancer, Int. J. Clin. Oncol, vol.20, pp.207-239, 2015.

M. Ferlitsch, Colorectal polypectomy and endoscopic mucosal resection (EMR): European Society of Gastrointestinal Endoscopy (ESGE) Clinical Guideline, Endoscopy, vol.49, pp.270-297, 2017.

H. Kobayashi, Characteristics of recurrence and surveillance tools after curative resection for colorectal cancer: a multicenter study, Surgery, vol.141, pp.67-75, 2007.

, Recommandations et CRFS pour la prise en charge d'un polype colo-rectal pTis/pT1-SFP novembre, 2017.

H. Ueno, Risk factors for an adverse outcome in early invasive colorectal carcinoma, Gastroenterology, vol.127, pp.385-394, 2004.

N. Asayama, Long-term outcomes after treatment for pedicle-type T1colorectal carcinoma: a multicenter retrospective cohort study, J. Gastroenterol, vol.51, pp.702-710, 2016.

R. C. Haggitt, R. E. Glotzbach, E. E. Soffer, and L. D. Wruble, Prognostic factors in colorectal carcinomas arising in adenomas: implications for lesions removed by endoscopic polypectomy, Gastroenterology, vol.89, pp.328-336, 1985.

, The Paris endoscopic classification of superficial neoplastic lesions: esophagus, stomach, and colon, Gastrointest. Endosc, vol.58, issue.S3, p.43, 2002.

S. Kudo, Endoscopic mucosal resection of flat and depressed types of early colorectal cancer, Endoscopy, vol.25, pp.455-461, 1993.

R. Kikuchi, Management of early invasive colorectal cancer. Risk of recurrence and clinical guidelines, Dis. Colon Rectum, vol.38, pp.1286-1295, 1995.

P. Quirke, M. Risio, R. Lambert, L. Von-karsa, and M. Vieth, International Agency for Research on Cancer. European guidelines for quality assurance in colorectal cancer screening and diagnosis. First edition-Quality assurance in pathology in colorectal cancer screening and diagnosis, Endoscopy, vol.44, pp.116-130, 2012.

, Colorectal cancer: the diagnosis and management of colorectal cancer. National Institute for Health Care Excellence (NICE) Guideline, 2014.

S. R. Hamilton, Carcinoma of the colon and rectum, WHO Classification of Tumours of the Digestive System, pp.134-146, 2010.

A. Lugli, Recommendations for reporting tumor budding in colorectal cancer based on the International Tumor Budding Consensus Conference (ITBCC) 2016. Mod. Path, vol.30, pp.1299-1311, 2017.

C. Beaton, C. P. Twine, G. L. Williams, and A. G. Radcliffe, Systematic review and meta-analysis of histopathological factors influencing the risk of lymph node metastasis in early colorectal cancer, Colorectal Dis, vol.15, pp.788-797, 2013.

K. Kitajima, Correlations between lymph node metastasis and depth of submucosal invasion in submucosal invasive colorectal carcinoma: a Japanese collaborative study, J. Gastroenterol, vol.39, pp.534-543, 2004.

K. Nakadoi, Management of T1 colorectal carcinoma with special reference to criteria for curative endoscopic resection: Management of T1 colorectal carcinoma, J. Gastroenterol. Hepatol, vol.27, pp.1057-1062, 2012.

Y. Kouyama, Practical problems of measuring depth of submucosal invasion in T1 colorectal carcinomas, Int. J. Colorectal Dis, vol.31, pp.137-146, 2016.

H. S. Cooper, Endoscopically removed malignant colorectal polyps: Clinicopathologic correlations, Gastroenterology, vol.108, pp.1657-1665, 1995.

P. Netzer, Risk factor assessment of endoscopically removed malignant colorectal polyps, Gut, vol.43, pp.669-674, 1998.

P. W. Choi, Risk factors for lymph node metastasis in submucosal invasive colorectal cancer, World J. Surg, vol.32, pp.2089-2094, 2008.

C. Hassan, A. Zullo, M. Risio, F. P. Rossini, and S. Morini, Histologic risk factors and clinical outcome in colorectal malignant polyp: a pooled-data analysis, Dis. Colon Rectum, vol.48, pp.1588-1596, 2005.

I. Kaneko, Lymphatic Vessel Density at the Site of Deepest Penetration as a Predictor of Lymph Node Metastasis in Submucosal Colorectal Cancer, Dis. Colon Rectum, vol.50, pp.13-21, 2007.

R. Nascimbeni, L. J. Burgart, S. Nivatvongs, and D. R. Larson, Risk of lymph node metastasis in T1 carcinoma of the colon and rectum, Dis. Colon Rectum, vol.45, pp.200-206, 2002.

M. Sakuragi, Predictive factors for lymph node metastasis in T1 stage colorectal carcinomas, Dis. Colon Rectum, vol.46, pp.1626-1632, 2003.

S. L. Bosch, S. Teerenstra, J. H. De-wilt, C. Cunningham, and I. D. Nagtegaal, Predicting lymph node metastasis in pT1 colorectal cancer: a systematic review of risk factors providing rationale for therapy decisions, Endoscopy, vol.45, pp.827-834, 2013.

J. W. Huh, H. R. Kim, and Y. J. Kim, Lymphovascular or Perineural Invasion May Predict Lymph Node Metastasis in Patients With T1 and T2 Colorectal Cancer, J. Gastrointest. Surg, vol.14, pp.1074-1080, 2010.

H. Kobayashi, Characteristics of recurrence after curative resection for T1 colorectal cancer: Japanese multicenter study, J. Gastroenterol, vol.46, pp.203-211, 2011.

K. Nakadoi, Condition of muscularis mucosae is a risk factor for lymph node metastasis in T1 colorectal carcinoma, Surg. Endosc, vol.28, pp.1269-1276, 2014.

S. Yoshii, Factors Associated With Risk for Colorectal Cancer Recurrence After Endoscopic Resection of T1 Tumors, Clin. Gastroenterol. Hepatol, vol.12, pp.292-302, 2014.

H. Ikematsu, Long-term Outcomes After Resection for Submucosal Invasive Colorectal Cancers, Gastroenterology, vol.144, pp.551-559, 2013.

P. G. Doornebosch, Treatment of recurrence after transanal endoscopic microsurgery (TEM) for T1 rectal cancer, Dis. Colon Rectum, vol.53, pp.1234-1239, 2010.

J. Peng, Oncological outcome of T1 rectal cancer undergoing standard resection and local excision, Colorectal Dis, vol.13, pp.14-19, 2011.

D. H. Choi, Indications for subsequent surgery after endoscopic resection of submucosally invasive colorectal carcinomas: a prospective cohort study, Dis. Colon Rectum, vol.52, pp.438-445, 2009.

K. Levic, O. Bulut, T. P. Hansen, I. Gögenur, and T. Bisgaard, Malignant colorectal polyps: endoscopic polypectomy and watchful waiting is not inferior to subsequent bowel resection. A nationwide propensity score-based analysis, Langenbecks Arch. Surg, vol.404, pp.231-242, 2019.

S. Iida, Risk factors for postoperative recurrence in patients with pathologically T1 colorectal cancer, World J. Surg, vol.36, pp.424-430, 2012.