title: Intraoperative difficulties and the reasons for conversion in patients treated with laparoscopic colorectal tumors.
abstract: OBJECTIVE
  Was an evaluation of conversion causes and intraoperative difficulties in patients treated with laparoscopic surgery due to colorectal tumours on the basis of authors' own material.
  
  
  METHODS
  in the period 2009-2012 160 patients were operated on because of large bowel cancer, 79 women and 81 men. Average age of patients was 66 years. The conversion was recognized as desuflation of peritoneal cavity, trocars removal and making laparotomy.
  
  
  RESULTS
  The conversion was made in 22 cases (13,7%). More in men (16.1%) than in women. The conversion was made twice as likely in T3 and T4 tumors than in T1 and T2.
  
  
  CONCLUSIONS
  The main cause of conversion in laparoscopic operations of colorectal cancer is local tumor progression.
authors.affiliation: Department of General, Oncologic and Digestive Tract Surgery, Medical Centre of Postgraduate Education in Warsaw.
authors.forename: Wiesław
authors.initials: W
authors.lastname: Tarnowski
authors.forename: Mariusz
authors.initials: M
authors.lastname: Uryszek
authors.forename: Aleksander
authors.initials: A
authors.lastname: Grous
authors.forename: Naser
authors.initials: N
authors.lastname: Dib
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015179:Colorectal Neoplasms / Q000473:pathology* / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007431:Intraoperative Complications / Q000209:etiology* / Q000601:surgery*; D010535:Laparoscopy / Q000009:adverse effects* / Q000379:methods; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D012086:Reoperation; D018570:Risk Assessment; D016896:Treatment Outcome