title: Key factors in achieving successful endoscopic dissection of rectal tumors: early results of 33 consecutive rectal endoscopic submucosal dissections in Polish academic center.
abstract: BACKGROUND
  The aim of the study was to investigate outcomes of rectal endoscopic dissection (ESDs) performed in a single academic institution in Poland.
  
  
  METHODS
  Thirty-three consecutive cases of rectal ESDs were performed between June 2013 and April 2014. Effectiveness of dissection, complications, and the tumor recurrence after 3 months of treatment were than retrospectively investigated.
  
  
  RESULTS
  The average size of the dissected tumor was 4.025 cm. Overall en-block resection rate was 70%. Follow-up examinations after 3 months so far were conducted in 15 patients. There was no local recurrence. In univariate analysis, the en-bloc resection rate was significantly higher in smaller lesions (P<0.001) and in patients undergone ESD in second half period of service duration.
  
  
  CONCLUSIONS
  ESD of the rectal tumors is a valuable alternative treatment method for adenomas and T1 SM1 rectal cancers. The risk of serious complications and local recurrence is low.
authors.affiliation: General and Colorectal Surgery Department, Medical University, Lodz, Poland.
authors.forename: Michal
authors.initials: M
authors.lastname: Spychalski
authors.forename: Piotr
authors.initials: P
authors.lastname: Zelga
authors.forename: Adam
authors.initials: A
authors.lastname: Dziki
mesh_terms: D000046:Academic Medical Centers; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001706:Biopsy; D003113:Colonoscopy / Q000379:methods*; D004210:Dissection / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D007413:Intestinal Mucosa / Q000473:pathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011044:Poland / Q000453:epidemiology; D011183:Postoperative Complications / Q000453:epidemiology; D012004:Rectal Neoplasms / Q000175:diagnosis / Q000601:surgery*; D012189:Retrospective Studies; D013997:Time Factors; D016896:Treatment Outcome