Abstract Library

#4398 The role of chromogranin A as a biomarker in neuroendocrine tumours: Diagnostic and prognostic implications

Introduction: Chromogranin A (CgA) is a widely used serum biomarker for neuroendocrine tumours (NETs), reflecting tumour burden and secretory activity. Despite its clinical utility, the diagnostic sensitivity and prognostic value of CgA remain a subject of debate, especially given its potential for false positives and its variation across different NET subtypes.

Conference:

Presenting Author:

Authors: Xu L, Ye M, Zeng X, Chen S, Ding Y,

Keywords: Chromogranin A, neuroendocrine tumour, diagnosis, prognosis, biomarker, Ki-67, metastatic disease,

#3557 Final analysis of Chromogranin A for neuroendocrine tumor diagnosis in Chilean patients: An updated case-control study

Introduction: Neuroendocrine tumors (NETs) are highly heterogeneous and differ geographically. Serum chromogranin A (CgA) is the most used biomarker for NET diagnosis, with a sensitivity of 63-100% and specificity of 95-98% with a cutoff value of 108 ng/mL. Recent studies worldwide have reported varying frequencies of NET patients with high CGA at diagnosis, suggesting that the cutoff value may differ according to each population.

Conference:

Presenting Author: Muñoz Medel M

Authors: Muñoz Medel M, Cordova Delgado M, Duran D, Pinto M, Bravo M,

Keywords: neuroendocrine, chromogranin a, biomarker,

#3243 The major impact of proGRP monitoring in advanced atypical lung carcinoid: A case report

Introduction: Atypical lung carcinoids (aLC) are more aggressive than typical carcinoids, metastasizing more commonly to distant sites, and require vigilant follow-up. However, the surveillance is often hampered by the non-informative Chromogranin A (CgA) levels.

Conference: 18th Annual ENETS Concerence (2021)

Presenting Author:

Authors: Oleinikov K, Ben-Haim S, Atlan K, Nisman B, Bloom A,

Keywords: pro-GRP, lung carcinoids, biomarker,

#2803 Chromogranin A as a Tumoral Marker for Neuroendocrine Tumors in Chilean Patients: A Case-Control Study

Introduction: Neuroendocrine tumors (NETs) are highly heterogeneous, serum chromogranin A (CgA) has a 60-100% of sensitivity and 68-100% of specificity with a cutoff value of 108 ng/mL as a marker for diagnosis of NETs.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Munoz Medel M

Authors: Munoz-Medel M, Cordova Delgado M, Pinto M, Bravo M, Retamal I,

Keywords: Neuroendocrine, Chromogranin A, Biomarker,

#2700 Pancreatic Neuroendocrine Neoplasms and Liver Metastases: When Size Matters

Introduction: Small non-functioning pNENs are low grade indolent tumors, however distant metastases have also been documented in this subset of patients

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Monteleone M, Rossi R, Altomare M, Prinzi N, Cattaneo L,

Keywords: Pancreatic neuroendocrine neoplasia, Liver metastases,