A case of biliary tract infection during treatment for carcinoma of the external auditory canal

Abstract

Biliary infections occur when bile drainage is obstructed due to the formation of gallstones or bile mud. Prolonged fasting or inadequate oral intake can cause stagnation of bile, resulting in the formation of gallstones or bile sludge. In addition, opioids may cause sphincter of Oddi dysfunction. Abdominal symptoms during chemoradiation therapy require attention. We experienced a case of biliary tract infection during cetuximab-based bioradiotherapy for carcinoma of the external auditory canal. Biliary tract infection may require laparotomy if diagnosis and treatment are delayed. Biliary tract infection is one of the complications of chemoradiotherapy that otolaryngologists should be aware of.