We have focused on perioperative management of patients with recent drug-eluting coronary stent (DES) implantation during pancreaticoduodenectomy in a recent issue of Journal of Gastroenterology and Hepatology Research [1] . Likely, we recently experienced a case requiring treatment for hilar cholangiocarcinoma in a patient starting dual-antiplatelet therapy (DAPT) just after implanting a drug-eluting coronary stent.A 76-year-old Japanese male patient was admitted to our hospital for myocardial infarction and underwent DES insertion (everolimuseluting stent) into both his right coronary artery and left circumflex artery. Follow-up computed tomography was performed a few days later, and an enhanced tumor shadow, accompanied by obstruction of the left hepatic duct, was detected ( Figure 1A). Endoscopic retrograde cholangiopancreatography ( Figure 1B) confirmed the diagnosis of locally advanced hilar cholangiocarcinoma (BismuthCorlette type IIIb), and an internal biliary drainage catheter was left in place. The patient was considered to require surgical resection, but the risks of surgical intervention were heightened by the facts that he had experienced myocardial infarction, that the DES had been placed within the previous 4 weeks, and that he had just started DAPT following DES implantation. After the patient was informed of the risks, benefits, and alternative therapies, we decided to begin cisplatin plus gemcitabine chemotherapy with continuation of DAPT. The patient received 7 cycles of chemotherapy without any significant adverse drug events, and the tumour response was assessed as stable disease.Six months after the initial diagnosis, a surgical intervention was attempted. According to our perioperative antithrombotic protocol
ABSTRACTPatients who undergo drug-eluting coronary stent (DES) implantation require dual antiplatelet therapy for at least 6 months. When these patients require non-cardiac surgery, determination of the most appropriate antiplatelet therapy to minimize the risk of stent thrombosis and/or bleeding complications is always difficult. In particular, patients who have just undergone DES implantation have an extremely high risk of stent thrombosis, and delaying surgery is required to reduce the risk. We herein report the case of a male patient in whom hilar cholangiocarcinoma was detected just after implanting DES and who safely underwent curative resection for the hilar cholangiocarcinoma following neoadjuvant chemotherapy. This case serves as an example of successful resolution of this challenging problem.