Journal
CLINICAL ENDOCRINOLOGY
Volume 81, Issue 6, Pages 847-854Publisher
WILEY
DOI: 10.1111/cen.12473
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Funding
- MRC [G1001821] Funding Source: UKRI
- Medical Research Council [G1001821] Funding Source: researchfish
- Medical Research Council [G1001821] Funding Source: Medline
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ContextCongenital hyperinsulinism (CHI) is a rare disease characterized by severe hypoglycaemic episodes due to pathologically increased insulin secretion from the pancreatic beta cells. When untreated, CHI might result in irreversible brain damage and death. Currently, two major subtypes of CHI are known: a focal form, associated with local distribution of affected beta cells and a nonfocal form, affecting every single beta cell. The identification of focal forms is important, as the patients can be cured by limited surgery. F-18 DOPA-PET/CT is an established non-invasive approach to differentiate focal from nonfocal CHI. ObjectiveThe purpose of this study was to identify possible limitations of F-18 DOPA-PET/CT scan in patients with focal forms nonfocal CHI. DesignA retrospective chart review of 32 patients (from 2008 through 2013) who underwent F-18 DOPA-PET/CT and partial pancreatectomy for focal CHI at the reference centres in Berlin, Germany and London, UK. ResultsIn most cases (n=29, 907%), F-18 DOPA-PET/CT was sufficient to localize the complete focal lesion. However, in some patients (n=3, 93%), F-18 DOPA-PET/CT wrongly visualized only a small portion of the focal lesion. In this group of patients, a so-called giant focus' was detected in histopathological analysis during the surgery. ConclusionsOur data show that in most patients with focal CHI F-18 DOPA-PET/CT correctly predicts the size and anatomical localisation of the lesion. However, in those patients with a giant focal' lesion F-18 DOPA-PET/CT is unreliable for correct identification of giant focus' cases.
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