This study focuses on pancreatic cysts, especially malignant pancreatic cysts. The primary hypothesis of the study is that using nCLE in addition to EUS-FNA and tissue sampling allows better characterization of pancreatic cysts and improves appropriate therapeutic decision-making. For physicians, integrating nCLE into the diagnostic algorithm of pancreatic cysts could impact patient management by: Ruling out malignancy for patients with benign appearing nCLE images. Characterizing more malignant tumors in the pancreas.