Pancreatic cancer secondary to intraductal papillary mucinous neoplasm with collision between gastric cancer and B-cell lymphoma: A case report

Table 1 Timeline

Time	Events
October 11, 2015	Patient diagnosed with intraductal papillary mucinous neoplasm
November 13, 2017	Patient diagnosed with CA19-9 increased
April 16, 2018	Patient’s EUS examination was revealed a mass in the tail of the pancreas
June 1, 2018	Patient diagnosed with early gastric cancer
July 26, 2018	Patient was treated with endoscopic submucosal dissection
July 31, 2018	ESD resected specimen, pathological diagnosis of submucosal diffuse large B cell lymphoma
February 15, 2019	Patients underwent EUS-FNA were diagnosed with pancreatic cancer
March 7, 2019	Patient underwent surgery for pancreatic cancer
June 5, 2019	CA19-9 returned to normal

CA19-9: Carbohydrate antigen 19-9; EUS: Endoscopic ultrasound; ESD: Endoscopic submucosal dissection; FNA: Fine needle aspiration.