Focus on the Interactive Cooperation Among Mechanotransduction and Biochemical Processes in Pancreatic Ductal Adenocarcinoma Development and Possible Adjuvant Role of Retinoic Acid for Its Treatment: A Narrative Review. - Fiorino, Sirio; Hong, Wandong; de Biase, Dario; Mastrangelo, Laura; Maccioni, Francesca; Grottesi, Alfonso; Ambrosi, Francesca; Pincigher, Luca; Lari, Federico; Bergamini, Christian; Jovine, Elio; Zippi, Maddalena (Cancers, 2026)