**Ultra-High Resolution Optical Coherence Tomography for Pancreatic Cancer Detection** This study looks at a special method called *ultra-high resolution optical coherence tomography (OCT)* to find tiny, early-stage pancreatic cancer in people with pancreatic cancer. OCT is a technology that uses light to create detailed pictures of tissues, helping doctors see cancerous changes. **Intraductal papillary mucinous neoplasms (IPMN)** are pre-cancerous growths in the pancreas. They can sometimes turn into cancer, so doctors often recommend surgery to remove them. In this study, after the pancreas is removed, OCT is used on the tissue to see if it can spot cancer. Later, the tissue is examined in a lab to confirm the findings. The goal is to use OCT safely without damaging the tissue before it is checked in the lab. **Key Points:** - **Length and Visits:** Participation involves surgery and OCT imaging of the removed tissue. - **Risks:** There are no risks from OCT as it is non-invasive and does not affect the specimen. - **Eligibility:** Adults with pancreatic cancer or IPMN; not suitable for pregnant individuals.