Background: The progression of hepatic steatosis after pancreaticoduodenectomy (PD) is controversial. This study was designed to determine whether PD would influence the course of hepatic steatosis.
Methods: Patients admitted for PD and distal pancreatectomy (DP) from January 2004 to January 2008 were enrolled. Exclusion criteria included liver metastasis, severe obesity (body mass index >30), diabetic mellitus, excessive alcohol consumption, and unavailable preoperative and 6-month postoperative unenhanced CT images. The pre-PD and post-PD liver attenuation, ratio, and difference of liver-to-spleen attenuation between liver and spleen attenuation were compared.
Results: Fifty patients who underwent PD and 20 patients who underwent DP were eligible. The mean follow-up period was 18.2 +/- 1.6 months for the PD group and 19.7 +/- 1.7 months for the DP group. Liver attenuation after PD was significantly decreased from 52.3 +/- 1.1 H. to 47.6 +/- 2 H. (p = 0.044), but no difference was observed in spleen attenuation. The liver-to-spleen attenuation ratio after PD also was significantly decreased: 1.12 +/- 0.02 versus 1.01 +/- 0.04 (p = 0.033). No difference in liver attenuation was found in the DP group. The female gender was a significant risk factor.
Conclusions: The liver attenuation of CT images decreases in patients who receive PD, which implicates that hepatic steatosis can develop after PD; however, the mechanism needs to be elucidated.
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