Background: A 41-year-old Maltese woman with a 12-month history of severe, morning episodes of confusion, blurred vision and sweating was referred to a specialist center for evaluation of fasting hypoglycemia. She was not taking medication and did not report any prior personal or familial history of endocrinopathy or other relevant pathology.
Investigations: Measurement of plasma glucose, insulin, C-peptide, and beta-hydroxybutyrate concentrations during a prolonged supervised fast; sulfonylurea screen; CT, MRI scan and endoscopic ultrasonography of the pancreas; calcium stimulation test; surgical exploration and intra-operative ultrasonography of the pancreas.
Diagnosis: Insulin-secreting lesion (insulinoma) in the tail of the pancreas.
Management: The tumor was resected with cure of symptoms.
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http://dx.doi.org/10.1038/nrendo.2009.198 | DOI Listing |
Nucl Med Mol Imaging
February 2025
Department of Nuclear Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351 Republic of Korea.
This guideline outlines the use of 3,4-dihydroxy-6-F-fluoro-L-phenylalanine positron emission tomography / computed tomography for the diagnosis and management of neuroendocrine tumors, brain tumors, and other tumorous conditions. It provides detailed recommendations on patient preparation, imaging procedures, and result interpretation. Based on international standards and adapted to local clinical practices, the guideline emphasizes safety, quality control, and the effective application of 3,4-dihydroxy-6-F-fluoro-L-phenylalanine positron emission tomography / computed tomography for various tumors such as insulinomas, pheochromocytomas, and medullary thyroid carcinoma.
View Article and Find Full Text PDFIndian J Endocrinol Metab
September 2024
Department of Endocrinology and Metabolism, Medical College and Hospital, Kolkata, West Bengal, India.
Introduction: Paradoxical co-existence of insulinoma and diabetes is extremely rare. Although a few case reports addressed this association, a comprehensive study elucidating this relationship has been lacking. We performed a systematic review of published cases of insulinoma in diabetes.
View Article and Find Full Text PDFBackground: Insulinoma is a neuroendocrine tumor, the main manifestation of which is hypoglycemia. However, the symptoms of hypoglycemia can be non-specific for a long time, especially outside provocative conditions, and quite often the tumor manifests from a life-threatening condition - hypoglycemic coma. In this regard, timely laboratory diagnosis of insulinoma and determination of its aggressive course is one of the priorities in modern researches.
View Article and Find Full Text PDFJCEM Case Rep
February 2025
Division of Endocrinology, Diabetes & Metabolic Diseases, Thomas Jefferson University Hospital, Philadelphia, PA 19107, USA.
Insulinomas are rare neuroendocrine neoplasms and causes of hypoglycemia. They present with neuroglycopenic symptoms, including confusion and seizures. Suspected diagnosis must be confirmed through bloodwork and imaging.
View Article and Find Full Text PDFArq Bras Cir Dig
January 2025
Universidade de São Paulo, Faculty of Medicine - São Paulo (SP), Brazil.
Background: Pancreatic neuroendocrine tumors (PNETs) are uncommon and heterogeneous neoplasms, often exhibiting indolent biological behavior. Their incidence is rising, largely due to the widespread use of high-resolution imaging techniques, particularly influencing the diagnosis of sporadic non-functioning tumors, which account for up to 80% of cases. While surgical resection remains the only curative option, the impact of factors such as tumor grade, size, and type on prognosis and recurrence is still unclear.
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