Calcitonin-secreting pancreatic endocrine tumors: systematic analysis of a rare tumor entity.

Objective:Pancreatic endocrine tumors (PETs) are characterized by the presence of hormone syndromes. Reports focusing on calcitonin-secreting PET (CTsPETs) are very rare. This study aimed to define a CTsPET-associated syndrome in regard to chemical, anatomical, and developmental aspects.Methods:A co