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We read with great interest the recent article by Lucatelli et al. [1]. They raised an important issue on the risk factors for fever development after percutaneous transhepatic biliary drainage (PTBD). A total of 30 risk factors were analyzed in this study. However, many important risk factors were not involved in this study.
It is well known that the incidence of fever was higher in patients who underwent internal-external PTBD than external PTBD due to retrograde infection [2]. The factors, including malignant tumor (especially, the pancreatic cancer and duodenal tumors), incomplete duodenal obstruction, gastrointestinal underpowered, and constipation, all have close relationship with the bile reflux, which may induce to cause retrograde infection [2, 3]. Also, many pancreatic cancer patients have both biliary and incomplete duodenal obstruction [4, 5]. Those factors may increase the incidence of fever after internal-external PTBD, which may bias the results.
References
Lucatelli P, Corradini SG, Corona M, et al. Risk factors for immediate and delayed-onset fever after percutaneous transhepatic biliary drainage. Cardiovasc Intervent Radiol. 2015;. doi:10.1007/s00270-015-1242-9.
Xu C, Huang X, Wang S, et al. Comparison of infection between internal-external and external percutaneous transhepatic biliary drainage in treating patients with malignant obstructive jaundice. Asian Pac J Cancer Prev. 2015;16:2543–6.
Xu C, Lv P, Huang X, et al. Internal-external percutaneous transhepatic biliary drainage for patients with malignant obstructive jaundice. Asian Pac J Cancer Prev. 2014;15:9391–4.
Maire F, Sauvanet A. Palliation of biliary and duodenal obstruction in patients with unresectable pancreatic cancer: endoscopy or surgery? J Visc Surg. 2013;150:S27–31.
Tonozuka R, Itoi T, Sofuni A, et al. Endoscopic double stenting for the treatment of malignant biliary and duodenal obstruction due to pancreatic cancer. Dig Endosc. 2013;25:S100–8.
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Xiaocheng Gu, Kai Wang, and Zhongzhi Jia declare that they have no potential conflicts of interest.
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Gu, X., Wang, K. & Jia, Z. Regarding “Risk Factors for Immediate and Delayed-Onset Fever After Percutaneous Transhepatic Biliary Drainage”. Cardiovasc Intervent Radiol 39, 795 (2016). https://doi.org/10.1007/s00270-016-1306-5
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DOI: https://doi.org/10.1007/s00270-016-1306-5