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. 2024 Jun;38(6):3388-3394.
doi: 10.1007/s00464-024-10856-1. Epub 2024 May 8.

Risk assessment for pancreatic fistula by intraoperative image analysis of laparoscopic and robotic gastrectomy

Keiji Nishibeppu  1 , Takeshi Kubota  2 , Yudai Nakabayashi  1 , Masayuki Yubakami  1 , Takuma Ohashi  1 , Hirotaka Konishi  1 , Atsushi Shiozaki  1 , Hitoshi Fujiwara  1 , Eigo Otsuji  1
Affiliations

Risk assessment for pancreatic fistula by intraoperative image analysis of laparoscopic and robotic gastrectomy

Keiji Nishibeppu et al. Surg Endosc. 2024 Jun.

Abstract

Background: Pancreatic fistula (PF) is one of the most serious postoperative complications of gastrectomy. Misidentification of the boundary between the pancreas and the dissected fat is a primary concern. In this study, we focused on differences in the appearance of the pancreas and the dissected fat in actual surgical images and statistically analyzed the relationship between the pancreas and the dissected fat.

Methods: We analyzed data from 109 gastric cancer patients who underwent curative gastrectomy between November 2018 and March 2023. Intraoperative images were taken from videos of lymph node dissections of Nos.6 and 8a regions, and the mean gray value of the areas was measured using ImageJ software for analysis. The visceral fat area (VFA) was evaluated by preoperative axial CT at the umbilical level using Ziostation software.

Results: A significant correlation was observed between the fat/pancreas gray value ratio in the No.8a lymph node region and the drain/serum amylase ratio (P < 0.001). The fat/pancreas gray value ratio in the No.6 lymph node region correlated with VFA (P < 0.001). The VFA and drain/serum amylase ratio were significantly higher in the group with intra-abdominal complications (P = 0.004).

Conclusions: We revealed significant relationships between the fat/pancreas gray value ratio with drain/serum amylase and VFA. Detecting differences in gray values between the pancreas and the dissected fat may lead to a decrease in the drain/serum amylase ratio and PF.

Keywords: Gastric cancer; Minimally invasive surgery; Pancreatic fistula.

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