title: Risk of deep vein thrombosis following laparoscopic rectosigmoid cancer resection in chinese patients.
abstract: OBJECTIVE
  The aim of this study was to evaluate the incidence of postoperative deep vein thrombosis (DVT) in Chinese patients who underwent laparoscopic resection of rectal or sigmoid cancer in the absence of thromboprophylaxis.
  
  
  METHODS
  Patients with adenocarcinoma of the sigmoid colon or rectum scheduled for laparoscopic resection were recruited. Neither chemoprophylaxis nor mechanical methods against DVT were employed. They were scheduled to have routine duplex ultrasound of both lower limbs perioperatively.
  
  
  RESULTS
  In a 12-month period, 50 patients were recruited. Postoperative DVT occurred in 19 (38%) patients. None needed anticoagulation. Complete resolution of the thrombus was noted in 10 (53%) patients 12 weeks after operation, and in six patients 36 weeks after operation. Female sex was identified as being associated with a higher incidence of DVT. Age, smoking, preoperative neoadjuvant chemoirradiation, preoperative metastasis, duration of operation, conversion and postoperative complications did not appear to be risk factors for DVT.
  
  
  CONCLUSIONS
  The incidence of asymptomatic calf vein DVT is relatively high after laparoscopic resection for rectosigmoid cancers in the Chinese population. However, complete resolution occurred without the use of anticoagulant therapy in the majority of cases. It is thus difficult to advocate the routine use of anticoagulant prophylaxis.
authors.affiliation: Department of Surgery, Pamela Youde Nethersole Eastern Hospital, Chai Wan, Hong Kong SAR. yui92549@yahoo.com
authors.forename: Hester Yui-Shan
authors.initials: HY
authors.lastname: Cheung
authors.forename: Chi-Chiu
authors.initials: CC
authors.lastname: Chung
authors.forename: Kevin Kwok-Kay
authors.initials: KK
authors.lastname: Yau
authors.forename: Wing-Tai
authors.initials: WT
authors.lastname: Siu
authors.forename: Simon Kin-Hung
authors.initials: SK
authors.lastname: Wong
authors.forename: Elica
authors.initials: E
authors.lastname: Chiu
authors.forename: Michael Ka-Wah
authors.initials: MK
authors.lastname: Li
mesh_terms: D000230:Adenocarcinoma / Q000601:surgery*; D000368:Aged; D044466:Asian People; D002681:China; D005260:Female; D006801:Humans; D010535:Laparoscopy; D008297:Male; D011183:Postoperative Complications; D011446:Prospective Studies; D012004:Rectal Neoplasms / Q000601:surgery*; D012307:Risk Factors; D020246:Venous Thrombosis / Q000209:etiology*