Background: Prevalence of hepatic steatosis following pylorus-preserving pancreaticoduodenectomy (PPPD) is high. This study intended to reveal the prevalence and patterns of de novo hepatic steatosis following PPPD.
Methods: We investigated postoperative de novo hepatic steatosis following PPPD (n = 101) with a control group of bile duct resection (BDR) (n = 54).
Results: At postoperative 1 year, hepatic steatosis occurred in 21 of 82 patients (25.6%) of PPPD group and in 2 of 47 patients (4.3%) of BDR group (p = 0.001). Thereafter, at 2 to 5 years, a high prevalence of hepatic steatosis persisted in the PPPD group, but no further occurrence developed in BDR group. Once steatosis developed, it persisted until the end of the study period or patient death. Five-year cumulative incidence of hepatic steatosis was 26.7% in the PPPD group and 3.7% in BDR group (p < 0.001). Univariate analyses showed that patient sex, age, body mass index, blood lipid profile, recurrence of tumor, and diabetes did not have significant influence on the development of hepatic steatosis following PPPD.
Conclusions: De novo hepatic steatosis may develop in a not negligible proportion of patients undergone PPPD. Multicenter studies with a high number of patients are needed to elucidate its pathogenesis and to find effective treatment for pancreaticoduodenectomy-associated hepatic steatosis.
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