Optimal ICG dosage of preoperative colonoscopic tattooing for fluorescence-guided laparoscopic colorectal surgery.

Published on Feb 26, 2021in Surgical Endoscopy and Other Interventional Techniques3.149
· DOI :10.1007/S00464-021-08382-5
Hong-Min Ahn1
Estimated H-index: 1
(PNU: Pusan National University),
Gyung Mo Son13
Estimated H-index: 13
(PNU: Pusan National University)
+ 4 AuthorsHyung Wook Kim20
Estimated H-index: 20
(PNU: Pusan National University)
Source
Abstract
BACKGROUND Indocyanine green (ICG) is a multifunctional dye used in tumor localization, tissue perfusion, and lymph node (LN) mapping during fluorescence-guided laparoscopic colorectal surgery. PURPOSE This study aimed to establish the optimal protocol for preoperative endoscopic submucosal ICG injection to perform fluorescence lymph node mapping (FLNM), along with undisturbed fluorescent tumor localization and ICG angiography during a single surgery. METHODS Colorectal cancer patients (n = 192) were enrolled from May 2017 to December 2019. Colonoscopic submucosal ICG injection was performed 12 to 18 h before surgery. ICG injection protocols were modified based on the total injected ICG (mg) and tattooing site number. The concentrations of ICG were gradually decreased from the standard dose (2.5 mg/ml) to the minimum dose (0.2 mg/ml). Successful FLNM (FLNM-s) was defined as distinct fluorescent LNs observed under NIR camera. The patient's age, sex, body mass index (BMI), stage, cancer location, obstruction, and laboratory findings were compared between the FLNM-s and failed FLNM (FLNM-f) groups to identify clinical and pathological factors that affect FLNM. RESULTS In the ICG dose section of 0.5 to 1 mg, the success rate was highest within all functions including FLNM, fluorescent tumor localization, and ICG angiography. FLNM-s was related to ICG dose (0.5-1 mg), multiple submucosal injections, location of cancer, camera light source, and lower BMI. In the multivariate analysis, camera light source, non-obesity, and multiple injections were independent factors for FLNM-s). The mean total number of harvested LNs was significantly higher in the FLNM-s group than that in the FLNM-f group (p < 0.001). The number of metastatic lymph nodes was comparable between the two groups (p = 0.859). CONCLUSIONS Preoperative, endoscopic submucosal ICG injection with dose range 0.5 to 1 mg would be optimal protocol for multifunctional ICG applications during fluorescence-guided laparoscopic colorectal surgery.
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BACKGROUND: The optimal lymph node dissection with central vascular ligation is an important part for oncological outcomes after laparoscopic right-sided colon cancer surgery. Few studies have examined the clinical value of indocyanine green fluorescence imaging-guided D3 dissection for right-sided colon cancer. OBJECTIVES: We assessed the clinical value of indocyanine green fluorescence imaging-guided laparoscopic surgery in improving the radicality of lymph node dissection for right-sided colo...
6 CitationsSource
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Abstract To prove that tattooing using indocyanine green (ICG) is feasible in laparoscopic surgery for a colon tumor. Preoperative tattooing with ICG is useful for laparoscopic colectomy, especially in the N0 colon cancer group and LAR.
3 CitationsSource
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Abstract Indocyanine green fluorescence-imaging (ICG-FI) has emerged as a potential tool for increasing the accuracy of staging of patients with primary colorectal cancer (CRC) through the detection of sentinel lymph nodes (SLNs). Here, we report the results of a systematic review of the available literature in the clinical setting of ex vivo and in vivo ICG-FI for the detection of SLNs in primary colorectal cancer. PubMed, Scopus, and Cochrane literature databases were searched for original art...
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The American Society of Colon and Rectal Surgeons is dedicated to ensuring high-quality patient care by advancing the science, prevention, and management of disorders and diseases of the colon, rectum, and anus. The Clinical Practice Guidelines Committee is composed of society members who are chosen
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#1Gyung Mo Son (PNU: Pusan National University)H-Index: 13
#2Hong-Min Ahn (PNU: Pusan National University)H-Index: 1
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#1Gyung Mo Son (PNU: Pusan National University)H-Index: 13
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Indocyanine green (ICG) could be applied for multiple functions such as fluorescent tumor localization, fluorescence lymph node mapping (FLNM), and intraoperative angiography in colorectal cancer surgery. With the near-infrared (NIR) systems, colonoscopic ICG tattooing can be used to define the early colorectal cancer that cannot be easily distinguished through the serosal surface. The lymphatic pathways can be visualized under the NIR system when ICG is injected through the submucosal or subser...
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