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Published on: June 2, 2018
Prediction of Postoperative Pancreatic Fistula Occurrence by the Pancreatic Stump Shape and Remnant Pancreatic Volume
Ryoichi Miyamoto1, Masahiro Shiihara2, Mitsuru Watanabe2
1Department of Gastroenterological Surgery, Ibaraki Medical Center, Tokyo Medical University, Ibaraki, Japan. goodfirst883@gmail.com.
Background:
When three-dimensional computer graphics (3DCG) images are used, artificial intelligence (AI) engines can semiautomatically estimate the pancreatic thickness, pancreatic stump shape (PSS), surface area of the resected pancreatic stump, and remnant pancreatic volume (RPV). Here, we report the potential applications of the PSS and RPV and investigate postoperative pancreatic fistula (POPF) risk factors.
Patients And Methods:
We included 109 patients with pancreatic cancer in this study. First, we employed the roundness value to objectively evaluate the PSS. The correlations between the roundness value and the pancreatic thickness and surface area of the resected pancreatic stump were examined. In terms of RPV evaluation, we employed the RPV ratio, which was automatically calculated by the software by dividing the volume of the remnant pancreas by the total volume of the pancreas. Second, we performed a multivariable analysis to identify POPF risk factors, including the roundness value and RPV ratio.
Results:
The roundness value was significantly correlated with the pancreatic thickness and surface area of the resected pancreatic stump. Multivariable logistic regression analysis also revealed that a roundness value ≤ 11.3, an RPV ratio > 0.65, the absence of pathological fibrosis, and a pancreatic duct diameter ≤ 2.0 mm were independent risk factors for POPF.
Conclusions:
The preoperative roundness value and RPV ratio measured from 3DCG images were able to predict POPF occurrence.
