Laboratory and imaging diagnostic methods in the Zollinger-Ellison syndrome

Authors

Keywords:

Zollinger-Ellison syndrome, Gastrinoma, Neuroendocrine tumor, Diagnosis.

Abstract

Introduction: Zollinger-Ellison syndrome is a neuroendocrine tumor that produces hypersecretion of gastric acid and peptic ulcer. Therefore, the review was carried out with the objective of describing the main laboratory and imaging diagnostic methods in Zollinger-Ellison syndrome.

Development: a bibliographic review was carried out with the descriptors in Spanish and English "Zollinger-Ellison syndrome", "neuroendocrine tumor" and gastrinoma, taken from the descriptors in health sciences (DeCS / MeSH), in Google databases. Academic, SciELO and National Library of Medicine. As results, it was obtained that the laboratory methods are fasting basal serum gastrin, which is not reliable due to its alteration in different diseases, gastric pH, excludes secondary hypergastrinemias, and basal acid gastric secretion, which differentiates the forms of hypergastrinemia. These laboratory tests are complementary to each other, and to perform them, the intake of proton pump inhibitors must be suspended. Other tests include the secretin stimulation test, which confirms hypergastrinemia, and the calcium stimulation test, which diagnoses tumors >1 mm that express calcium receptors. Imaging methods are essential for tumor localization. The first imaging technique to be performed due to its high sensitivity and specificity is 111In-octreotide scintigraphy, which locates tumors not detected with other examinations and allows differential diagnosis with hypervascularized lesions.

Conclusions: Zollinger-Ellison syndrome requires the use of novel laboratory and imaging methods for an accurate diagnosis.

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Author Biographies

María de los Angeles Leyva Montero, Escuela Superior Politécnica de Chimborazo (ESPOCH). Riobamba. Chimborazo, Ecuador.

Especialista en Medicina General Integral y Anatomía Patológica. Máster en Medios Diagnósticos. Escuela Superior Politécnica de Chimborazo (ESPOCH). Riobamba. Chimborazo, Ecuador.

Nilvia Bienvenida Serrano Gámez, Escuela Superior Politécnica de Chimborazo (ESPOCH). Riobamba. Chimborazo, Ecuador.

Especialista de Primer Grado en Medicina Interna. Máster en Educación Médica Superior. Escuela Superior Politécnica de Chimborazo (ESPOCH). Riobamba. Chimborazo, Ecuador.

Rolando Teruel Ginés, Escuela Superior Politécnica de Chimborazo (ESPOCH). Riobamba. Chimborazo, Ecuador.

Especialista de Segundo Grado en Medicina Interna. Máster en Urgencias Médicas. Escuela Superior Politécnica de Chimborazo (ESPOCH). Riobamba. Chimborazo, Ecuador.

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Published

2022-04-21

How to Cite

1.
Leyva Montero M de los A, Serrano Gámez NB, Teruel Ginés R. Laboratory and imaging diagnostic methods in the Zollinger-Ellison syndrome. RM [Internet]. 2022 Apr. 21 [cited 2025 Sep. 1];26(2):e2505. Available from: https://revmultimed.sld.cu/index.php/mtm/article/view/2505

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REVISIONES BIBLIOGRÁFICAS