Core Insights - Neuroendocrine tumors (NETs) are rare diseases with a low incidence rate of less than 1 in 10,000 per year, classified as rare diseases in China [2][5] - The disease is often misdiagnosed due to its insidious onset and varied symptoms, leading to a significant increase in detection rates as awareness improves [2][3] - Patients with a family history of neuroendocrine tumors should undergo early screening and regular follow-ups due to potential genetic mutations [5] Group 1: Disease Characteristics - NETs can occur in various organs, including the nervous system, heart, brain, kidneys, skin, gastrointestinal tract, and pancreas, with a higher incidence in the pancreas [2][3] - The tumors are generally low-grade malignancies that grow slowly, making them difficult to detect until they are large or have metastasized [2][3] - For pancreatic NETs, 60%-70% of patients present with liver metastasis at the time of diagnosis, significantly reducing the five-year survival rate to 40%-50% [2] Group 2: Symptoms and Diagnosis - Symptoms of functional NETs include excessive hormone secretion leading to conditions like hypoglycemia, which can cause fainting and other neurological symptoms [3] - Non-functional NETs are harder to detect, as they may not produce clear hormonal symptoms, leading to misdiagnosis [3] - Common symptoms to watch for include recurrent hypoglycemia, unexplained fainting, skin rashes, and persistent digestive issues [3] Group 3: Screening and Treatment - Individuals with a family history of NETs should have targeted screenings, including genetic testing and regular check-ups for related organs [5][6] - Treatment requires a multidisciplinary approach, utilizing various imaging techniques for accurate assessment and a combination of therapies such as chemotherapy, targeted therapy, and surgical interventions [6] - The establishment of rare disease MDT clinics, which involve collaboration among multiple specialties, is crucial for comprehensive patient care [6]