title: Impact of revisions of the JSCCR guidelines on the treatment of T1 colorectal carcinomas in Japan.
abstract: OBJECTIVE
  In 1977, the Japanese Society for Cancer of the Colon and Rectum (JSCCR) published the first edition of the general guidelines that described how to record clinical and histopathological findings of colorectal carcinomas (CRCs) and how to treat these cancers, and since then, the guidelines were revised several times. The aim of this study was to examine the impact of the revisions of the JSCCR guidelines on the treatment of submucosal CRCs (T1-CRCs) in Japanese clinical settings.
  
  
  METHODS
  Questionnaires were sent to all 391 member institutions of the JSCCR. The questionnaires consisted of 2 parts: details of the institutions and treatment strategies for T1-CRCs.
  
  
  RESULTS
  73 (19 %) institutions responded to the survey. The number of treated T1-CRCs has increased year by year, and the rate of endoscopic resection for T1-CRCs has significantly increased with revisions of the guidelines (1417 [47 %] of 2985 T1-CRCs in 2003 - 2005, 2110 [50 %] of 4212 in 2006 - 2008, and 2546 [54 %] of 4686 in 2009 - 2011, P<.05).
  
  
  CONCLUSIONS
  The revisions of the JSCCR guidelines have influenced the treatment of T1-CRCs in Japanese clinical settings. There is room to revise the criteria for curative endoscopic resection to avoid unnecessary surgeries.
authors: Endoscopy, Hiroshima University, Hiroshima.
authors: Y
authors: Y
authors: Urabe
authors: Endoscopy, Hiroshima University, Hiroshima.
authors: S
authors: S
authors: Tanaka
authors: Endoscopy, National Cancer Center Hospital, Tokyo.
authors: Y
authors: Y
authors: Saito
authors: Gastroenterology, Cancer Institute Ariake Hospital, Tokyo.
authors: M
authors: M
authors: Igarashi
authors: Surgical Oncology, Tokyo University, Tokyo.
authors: T
authors: T
authors: Watanabe
authors: Surgical Oncology, Graduate School of Tokyo Medical and Dental University, Tokyo.
authors: K
authors: K
authors: Sugihara
mesh_terms: D015179:Colorectal Neoplasms / Q000453:epidemiology / Q000601:surgery*; D016145:Endoscopy, Digestive System / Q000592:standards* / Q000706:statistics & numerical data*; D005260:Female; D019983:Guideline Adherence / Q000706:statistics & numerical data*; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D008495:Medical Oncology / Q000592:standards; D017410:Practice Guidelines as Topic; D010818:Practice Patterns, Physicians' / Q000592:standards / Q000706:statistics & numerical data*; D015995:Prevalence; D016896:Treatment Outcome