title: Short-term outcomes of open versus laparoscopic surgery in elderly patients with colorectal cancer.
abstract: Along with an aging society, the number of elderly patients with colorectal cancer treated with a surgical modality has gradually increased. Our purpose is to verify the safety and effectiveness of laparoscopic surgery for the treatment of colorectal cancer in elderly patients.
  
  
  
  We compared the short-term outcomes of open versus laparoscopic surgery in patients aged 80 years or older with colorectal cancer between 2007 and 2014.
  
  
  
  Of 150 elderly colorectal patients, 62 patients received laparoscopic surgery, and 88 patients, open surgery. In the laparoscopic surgery group, two patients were converted to open surgery due to extensive adhesion. The amount of blood loss was smaller in patients treated with laparoscopic surgery than those with open surgery (44.0 ± 86.5 vs. 329.9 ± 482.1 ml, P < 0.01). In the laparoscopic surgery group, days until oral intake (5.3 ± 1.9 vs. 7.0 ± 3.0 days, P < 0.01) and hospital stay (17.2 ± 6.8 vs. 22.0 ± 14.0 days, P < 0.01) were shorter. Morbidity (30.6 vs. 42.0 %) and mortality (1.6 vs. 1.1 %) in laparoscopic and open surgery groups were similar.
  
  
  
  Laparoscopic surgery in elderly patients with colorectal cancer was a safe and less invasive alternative to open surgery, with less blood loss and shorter hospital stay.
authors.affiliation: Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan. takn-tky@umin.ac.jp.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Nishikawa
authors.affiliation: Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
authors.forename: Soichiro
authors.initials: S
authors.lastname: Ishihara
authors.affiliation: Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
authors.forename: Keisuke
authors.initials: K
authors.lastname: Hata
authors.affiliation: Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
authors.forename: Koji
authors.initials: K
authors.lastname: Murono
authors.affiliation: Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
authors.forename: Koji
authors.initials: K
authors.lastname: Yasuda
authors.affiliation: Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
authors.forename: Kensuke
authors.initials: K
authors.lastname: Otani
authors.affiliation: Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Tanaka
authors.affiliation: Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
authors.forename: Tomomichi
authors.initials: T
authors.lastname: Kiyomatsu
authors.affiliation: Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
authors.forename: Kazushige
authors.initials: K
authors.lastname: Kawai
authors.affiliation: Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Nozawa
authors.affiliation: Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
authors.forename: Hironori
authors.initials: H
authors.lastname: Yamaguchi
authors.affiliation: Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Watanabe
mesh_terms: D000367:Age Factors; D000369:Aged, 80 and over; D003082:Colectomy / Q000379:methods*; D015179:Colorectal Neoplasms / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D010535:Laparoscopy; D008297:Male; D012007:Rectum / Q000601:surgery*; D012189:Retrospective Studies; D016896:Treatment Outcome
keywords: Colorectal cancer; Elderly patients; Laparoscopic surgery; Open surgery