Association between maximum length and mean stone density of pancreatic duct and session number of extracorporeal shock wave lithotripsy
LING Liping
GAO Xia
YANG Yanning
SHI Yihai
ZHANG Chunqing
Abstract：Objectives To explore the association between maximum length and mean stone density(MSD)of pancreatic duct stones at computed tomography and session number of pancreatic extracorporeal shock wave lithotripsy(P-ESWL).Meth-ods The clinical data of chronic pancreatitis patients with pancreatic duct stones who were admitted to Gongli Hospital of Shang-hai Pudong New Area were retrospectively analyzed.A total of 148 cases completed pancreatic computed tomography(CT)be-fore P-ESWL in our hospital,and pancreatic duct stones of these patients were successfully fragmented.The maximum length and MSD of stones were measured at CT,and the influencing factors of the session number of P-ESWL were explored by multi-variate analyses.Results Among 148 patients,93(62.84%)patients received less than two(≤2)sessions of P-ESWL,while 55(37.16%)patients received more than two(>2)sessions of P-ESWL.Multivariate analyses showed that the risk of increased P-ESWL sessions raised as the maximum length of stones increased(for every 5 mm increase in maximum length:OR=6.906,P<0.001),and the risk of increased P-ESWL sessions also got bigger as the MSD of pancreatic duct increased(for every 100 houn-sfield unit increase in MSD:OR=1.284,P<0.001).Conclusion The maximum length and MSD of pancreatic duct stones are the factors which influence the number of P-ESWL sessions.The measurement of maximum length and MSD of stones before litho-tripsy is beneficial to predicting the number of P-ESWL sessions.
Keywords：PancreatitisCalculi/StoneLithotripsTomographyX-ray computed
Publication Date：2025-01-27
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 74-78 )