Abstract

Key Clinical Message Serum carbohydrate antigen 19‐9 (CA19‐9) is used for recurrence surveillance in patients with resected pancreatic ductal adenocarcinoma (PDAC). This report describes the association of increasing CA19‐9 in a male PDAC survivor with presence of prostatic hyperplasia. Unexplained elevation of CA19‐9 in male PDAC survivors might be attributable to benign prostatic conditions.