A resected case of primary pancreatic cancer which should be differentiated from choriocartinoma

A 32-year-old woman with choriocarcinoma in 2008 has had a complete response to chemotherapy. Abdominal CT revealed a tumor at pancreatic body in April 2014. We suspected metastatic pancreatic cancer of choriocarcinoma, because the serum level of human chorionic gonadotropin (hCG) were elevated. So, we performed endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) to exclude primary pancreatic cancer. However, EUS-FNA indicated adenocarcinoma. Finally, she was diagnosed as primary pancreatic cancer. She underwent distal pancreatectomy. Histopathological examination of the surgically resected specimen revealed tubular adenocarcinoma, pT2N0M0 Stage II in the pancreas. After surgery, serum hCG level was normal level. At this case, EUS-FNA can be useful for the preoperative diagnosis.