[Pancreatic neuroendocrine tumors]

Area of Science:

• Endocrinology
• Oncology
• Surgical Oncology

Context:

• Pancreatic neuroendocrine tumors (PNETs) originate from islet cells, presenting a rare clinical challenge.
• Functioning PNETs secrete hormones, leading to distinct endocrine syndromes, while non-functioning types are often diagnosed at advanced stages with metastases.
• PNETs exhibit a better survival rate compared to pancreatic ductal adenocarcinoma.

Purpose:

• To provide an overview of pancreatic neuroendocrine tumors, including their origin, clinical presentation, and diagnostic challenges.
• To discuss the management of hormone-related syndromes associated with functioning PNETs.
• To highlight the therapeutic strategies, emphasizing surgical resection and multidisciplinary care.

Summary:

• PNETs are classified as functioning or non-functioning, with functioning types associated with specific hormone hypersecretion syndromes like Zollinger-Ellison syndrome.
• Specific functioning PNETs include insulinoma, gastrinoma, glucagonoma, VIPoma (vasoactive intestinal peptideoma), somatostatinoma, and ACTHoma, and can be linked to MEN 1 and von Hippel-Lindau disease.
• Diagnosis of non-functioning PNETs is often delayed due to late presentation with metastasis. Effective medical management exists for hormone hypersecretion, but surgical resection is preferred for localized disease.

Impact:

• Improved understanding of PNETs aids in timely diagnosis and management, potentially improving patient outcomes.
• Highlights the importance of multidisciplinary teams in optimizing treatment strategies for PNETs.
• Emphasizes the curable potential of PNETs through surgical intervention, especially in early-stage disease.