title: Endoscopic treatment of colorectal neoplasms: a simple and safe procedure to lower the incidence of colorectal cancers.
abstract: OBJECTIVE
  For many physicians who ordinarily treat patients with colonic diseases, colonoscopy is considered a prime study interest. Developments in colonoscopic equipment and methods have led to larger numbers of endoscopic diagnoses and treatments for colorectal neoplasms. The purpose of this investigation is to evaluate the efficacy and outcomes of endoscopic treatment for colorectal neoplastic lesions and the development of colorectal cancers after colonoscopic therapy.
  
  
  METHODS
  From September 1999 to May 2005, 19,815 consecutive colonoscopic examinations in 16,318 patients were gathered, totaling 9,534 endoscopic treatments for colorectal neoplasms. Macroscopic characteristics of the neoplasms were classified into protruded (N = 7,455), sessile (N = 1,569), lateral spreading tumor (N = 201), depressed lesions (N = 21), and flat lesions (N = 288). Snare polypectomy was conducted in 7,536 lesions, hot forceps removal in 1,545 lesions, and endoscopic mucosal resection in 353 lesions.
  
  
  RESULTS
  Histological diagnoses were 8,333 neoplastic lesions (8,246 adenomas with low/high-grade dysplasia and 87 invasive adenocarcinomas) and 1,201 non-neoplastic lesions (1,186 hyperplastic and 15 inflammatory polyps). For the adenocarcinoma group, all had received further operations, while 73 surgical specimens discovered no residual tumors. Four perforations and 146 bleedings were found following endoscopic treatment. No procedure-related mortality was found and no recurrent malignancy was found after 6-71 months follow-up.
  
  
  CONCLUSIONS
  To lower the incidence and mortality of advanced colorectal cancer, endoscopic treatment for colorectal neoplasms is a simple and safe procedure.
authors: Department of Gastroenterology and Hepatology, Linkou Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kweishan, Taoyuan, Taiwan.
authors: Ming-Yao
authors: MY
authors: Su
authors: Chen-Ming
authors: CM
authors: Hsu
authors: Chun-Jung
authors: CJ
authors: Lin
authors: Yu-Pin
authors: YP
authors: Ho
authors: Cheng-Tang
authors: CT
authors: Chiu
authors: Pang-Chi
authors: PC
authors: Chen
authors: Jau-Min
authors: JM
authors: Lien
authors: Cheng-Shyong
authors: CS
authors: Wu
authors: Shui-Yi
authors: SY
authors: Tung
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003111:Colonic Polyps / Q000473:pathology / Q000601:surgery*; D003113:Colonoscopy / Q000379:methods*; D015179:Colorectal Neoplasms / Q000473:pathology / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009364:Neoplasm Recurrence, Local; D016896:Treatment Outcome