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Malignant neoplasm of endocrine pancreas — Clinical Guidelines

Overview

Malignant neoplasms of the endocrine pancreas, primarily pancreatic neuroendocrine tumors (PNETs), arise from islet cells and exhibit diverse clinical behaviors based on hormone production and tumor biology. 4

Diagnosis

Imaging studies including CT, MRI, and somatostatin receptor scintigraphy (SRS) are essential for localization and staging. 4

Biopsy and histopathological examination confirm the diagnosis, distinguishing between functional and non-functional PNETs. 4

Serum hormone levels and specific biomarker assays (e.g., chromogranin A) aid in diagnosis and monitoring. 4

Genetic testing may identify specific mutations (e.g., MEN1, NF1) relevant for prognosis and management. 3

Management

First-line treatments include surgical resection for localized disease, aiming for complete removal to improve survival. 4

Adjunctive therapies for unresectable or metastatic disease include somatostatin analogs (e.g., octreotide, lanreotide), targeted therapies (e.g., everolimus, sunitinib), and peptide receptor radionuclide therapy (PRRT). 4

Radiation therapy may be considered for symptomatic relief or palliation in specific cases. 4

Special Populations

Elderly patients: Management often focuses on symptom control and minimally invasive approaches due to comorbidities. 4

Comorbidities: Presence of conditions like cardiovascular disease may influence treatment choices, favoring less aggressive interventions. 4

Key Recommendations

Surgical resection is recommended for patients with localized PNETs to achieve potential cure (Evidence: Strong 4).

Use somatostatin analogs for symptom control and tumor stabilization in patients with advanced or metastatic disease (Evidence: Moderate 4).

Consider PRRT in patients with metastatic disease who have progressed on other therapies, offering targeted radiation delivery (Evidence: Moderate 4).

Tailor management based on tumor biology and patient comorbidities, avoiding overly aggressive treatments in high-risk elderly or comorbid patients (Evidence: Expert opinion 4).

References

1 Lee H, Lee YJ, Kim E, Lee J, Ahn S, Lee SH. Subtype classification of gastric spindle cell tumors in whole slide images. Computers in biology and medicine 2026. link 2 . Cold Exposure Suppresses Tumor Growth through BAT Activation. Cancer discovery 2022. link 3 Batcher K, Dickinson P, Maciejczyk K, Brzeski K, Rasouliha SH, Letko A et al.. Multiple . Genes 2020. link 4 Breederveld RS, Hoitsma HF, Meijer S, Willig AP. Leiomyoblastoma of the gastric wall. The Netherlands journal of surgery 1986. link 5 Fioretti E, Citro G, Ascoli F. Immunochemical studies on the Kunitz type inhibitors from bovine spleen. Preparative biochemistry 1984. link

Malignant neoplasm of endocrine pancreas