Abstract Library

#4623 [68Ga]Ga-DOTA-Exendin-4 PET/CT for the localisation of insulinoma: Results of an international, dual-centre, retrospective, open-label real-world imaging study

Introduction: Benign insulinomas are the main cause of endogenous hyperinsulinemic hypoglycaemia (EHH) in adults, with surgery as the only cure. Pancreas-preserving procedures are preferred, making precise localisation crucial. Recent studies indicate that GLP-1R imaging, such as [68Ga]Ga-DOTA-exendin-4 (68Ga-Ex4) PET/CT, outperforms conventional imaging in identifying insulinomas.

Conference:

Presenting Author: Fricke J

Authors: Fricke J, Laubner K, Schildmeijer M, Menz L, Christ E,

Keywords: GLP1-Receptor PET/CT, Insulinoma, nesidioblatosis, endogenous hyperinsulinemic hypoglycaemia, real-life data,

#4592 Uncovering cell-state heterogeneity in large-cell panNEC indicates potentially targetable aberrant brain type neuronal de-differentiation

Introduction: Classification and treatment of high-grade pancreatic neuroendocrine carcinoma (panNEC), particularly those with large-cell morphology, present significant clinical challenges due to considerable inter- and intra-patient tumour heterogeneity.

Conference:

Presenting Author: Debnath O

Authors: Debnath O, Berger H, Detjen K, Kirchner P, Marinoni I,

Keywords: pancreatic neuroendocrine carcinoma, single cell, personalised medicine,

#4258 Unanticipated heterogeneity in high-grade large-cell neuroendocrine carcinoma pinpoints cell sub-state specific therapeutic targets

Introduction: High-grade pancreatic neuroendocrine carcinoma (panNEC) pose challenges in terms of classification and treatment. While molecular genetics have made strides in deciphering significant inter-tumor heterogeneity, the extent of intra-tumoral heterogeneity and lineage plasticity remains unexplored.

Conference:

Presenting Author:

Authors: Debnath O, Detjen K, Berger H, Kirchner P, Marinoni I,

Keywords: PanNEC, Single cell RNAseq,

#4187 Psychiatric and cognitive function in patients with serotonin producing neuroendocrine tumors

Introduction: Cognitive and psychiatric problems are common in cancer patients, but literature in patients with neuroendocrine tumors (NET) is scarce. Peripheral serotonin overproduction by the tumor, clinically manifesting as carcinoid syndrome, is hypothesized to be related to cognitive and psychiatric problems, through depletion of serotonin’s precursor tryptophan.

Conference:

Presenting Author: Tesselaar M

Authors: Luijendijk M, Tesselaar M, van Rossum H, Korse C, Verbeek W,

Keywords: Neuroendocrine neoplasm, carcinoid syndrome, cognitive functioning, depression, anxiety, serotonin, tryptophan, 5-HIAA,

#4142 Metastatic insulinoma – A clinical conundrum

Introduction: We present a case series of metastatic insulinoma from a single tertiary referral centre, highlighting heterogeneity in presentations, management, and multimodal therapy.

Conference:

Presenting Author:

Authors: Mathara Diddhenipothage S, Matheou M, Wilson S, Naseer A, Moore N,

Keywords: Metastatic insulinoma, hepatic metastases, peri-lesional steatosis,