Neuroendocrinology Glossary
100 terms total — 24 showing — Last updated 15 Sep 2026
multiple endocrine neoplasia
Hereditary syndromes characterized by tumors affecting multiple endocrine glands simultaneously.
5-HIAA
The major urinary metabolite of serotonin used as a biomarker for carcinoid tumors and syndrome.
adenohypophysis
The anterior portion of the pituitary gland that synthesizes and secretes multiple hormones.
adrenal incidentaloma
Adrenal mass discovered incidentally on imaging performed for unrelated clinical indications.
adrenal medullary hyperplasia
Enlargement of chromaffin tissue in the adrenal medulla, often associated with hereditary pheochromocytoma syndromes.
agouti-related peptide
A hypothalamic neuropeptide that acts as an orexigenic (appetite-stimulating) signal and melanocortin receptor antagonis...
APUD cells
Amine precursor uptake and decarboxylation cells; specialized neuroendocrine cells that concentrate and process amine pr...
arcuate nucleus
A hypothalamic region containing neurons that produce appetite-regulating hormones and growth hormone-releasing factor.
carcinoid syndrome
A paraneoplastic syndrome caused by excessive serotonin and other vasoactive substances released by neuroendocrine tumor...
catecholamine
Class of hormones including epinephrine, norepinephrine, and dopamine derived from tyrosine.
chromaffin cells
Specialized neuroendocrine cells in the adrenal medulla that secrete catecholamines.
chromogranin A
A glycoprotein marker used to identify neuroendocrine cells and tumors in clinical specimens.
chromogranin A level
Serum biomarker measurement used to detect, monitor, and assess treatment response in neuroendocrine tumors.
chromogranin B
A secretory protein found in neuroendocrine cells, used as a biomarker for neuroendocrine tumors.
chromogranin immunostaining
Histochemical technique using chromogranin antibodies to identify and characterize neuroendocrine cells and tumors.
circadian rhythm
Endogenous biological cycles of approximately 24 hours that regulate physiological processes and hormone secretion.
circumventricular organ
Specialized brain regions lacking a complete blood-brain barrier that allow direct communication between the central ner...
corticotroph
Specialized cells in the anterior pituitary that synthesize and secrete adrenocorticotropic hormone (ACTH) and related p...
corticotroph adenoma
A pituitary tumor secreting excess ACTH, causing Cushing's disease through chronic hypercortisolism.
corticotropin-releasing hormone
Hypothalamic peptide hormone that stimulates ACTH release from the anterior pituitary as part of the stress response.
diabetes insipidus
Disorder characterized by excessive urination and thirst due to deficient or ineffective vasopressin.
ectopic ACTH syndrome
Cushing syndrome caused by excessive ACTH secretion from non-pituitary neuroendocrine tumors.
ectopic hormone syndrome
Clinical condition caused by inappropriate hormone secretion from non-endocrine tumors or tissues outside normal endocri...
enterochromaffin cell
Specialized neuroendocrine cells in the gastrointestinal tract that produce serotonin and other regulatory peptides.
functional neuroendocrine tumor
Neuroendocrine neoplasm that produces and secretes hormones or bioactive substances causing clinical symptoms.