title: Intraoperative ICG fluorescence contrast imaging of the main artery watershed area in colorectal cancer surgery: Report of a case.
abstract: BACKGROUND
  Visualization of the main artery watershed area may be useful for determining the area that should be resected in colorectal cancer surgery. Resection of the main artery watershed area may result in complete resection of lymph nodes along the main artery and area of potential ischemia.
  
  
  METHODS
  A man in his 60s with a chief complaint of hematochezia visited our hospital, was diagnosed with colorectal cancer and underwent surgery. A case that underwent colorectal resection with intraoperative indocyanine green (ICG) fluorescence angiography from the resection-side of the superior rectal artery (SRA) in order to confirm the watershed area is reported. Observation was performed using a PINPOINT(®) bright-field, color, near-infrared fluorescence camera, and the watershed area of the SRA fluoresced 33s after the intra-arterial injection of ICG. After observation resection and anastomosis was performed. The patient's postoperative course was good.
  
  
  CONCLUSIONS
  The method is simple and can be performed within a short time, and it enables visual evaluation of the blood flow in the intestinal tract before anastomosis.
  
  
  CONCLUSIONS
  This method can be expected to provide useful information for complete resection of lymph nodes along the main artery and area of potential ischemia.
authors: Department of Surgery, International University of Health and Welfare Hospital, 537-3, Iguchi, Nasushiobara City, Tochigi, 329-2763, Japan. Electronic address: systematic.ryu1121@gmail.com.
authors: Shunjin
authors: S
authors: Ryu
authors: Department of Surgery, International University of Health and Welfare Hospital, 537-3, Iguchi, Nasushiobara City, Tochigi, 329-2763, Japan. Electronic address: masashi@iuhw.ac.jp.
authors: Masashi
authors: M
authors: Yoshida
authors: Department of Surgery, International University of Health and Welfare Hospital, 537-3, Iguchi, Nasushiobara City, Tochigi, 329-2763, Japan. Electronic address: ohdaira@iuhw.ac.jp.
authors: Ohdaira
authors: O
authors: Hironori
authors: Department of Surgery, International University of Health and Welfare Hospital, 537-3, Iguchi, Nasushiobara City, Tochigi, 329-2763, Japan. Electronic address: nobuhiro_mihoko@hotmail.com.
authors: Nobuhiro
authors: N
authors: Tsutsui
authors: Department of Surgery, International University of Health and Welfare Hospital, 537-3, Iguchi, Nasushiobara City, Tochigi, 329-2763, Japan. Electronic address: norinori_sculler@yahoo.co.jp.
authors: Norihiko
authors: N
authors: Suzuki
authors: Department of Surgery, International University of Health and Welfare Hospital, 537-3, Iguchi, Nasushiobara City, Tochigi, 329-2763, Japan. Electronic address: i_eisaku_ukasie@yahoo.co.jp.
authors: Eisaku
authors: E
authors: Ito
authors: Department of Surgery, International University of Health and Welfare Hospital, 537-3, Iguchi, Nasushiobara City, Tochigi, 329-2763, Japan. Electronic address: keigo_0613@yahoo.co.jp.
authors: Keigo
authors: K
authors: Nakajima
authors: Department of Surgery, International University of Health and Welfare Hospital, 537-3, Iguchi, Nasushiobara City, Tochigi, 329-2763, Japan. Electronic address: yanagisawa@iuhw.ac.jp.
authors: Satoru
authors: S
authors: Yanagisawa
authors: Department of Surgery, International University of Health and Welfare Hospital, 537-3, Iguchi, Nasushiobara City, Tochigi, 329-2763, Japan. Electronic address: kitajima@iuhw.ac.jp.
authors: Masaki
authors: M
authors: Kitajima
authors: Department of Surgery, International University of Health and Welfare Hospital, 537-3, Iguchi, Nasushiobara City, Tochigi, 329-2763, Japan. Electronic address: yutaka@iuhw.ac.jp.
authors: Yutaka
authors: Y
authors: Suzuki
keywords: Angiography; Case report; Colorectal cancer; ICG fluorescence; Intra-arterial injection