Adrenal adenoma: Difference between revisions
(Created page with "'''Adrenal adenomas''' are small (1 – 5 cm), yellow, soft benign tumors of the adrenal cortex. Only a small percentage of them are functional (hormone-secreting), while the majority are non-functional. Adrenal tumours are often discovered incidentally on CT imaging, giving them the nickname '''adrenal incidentaloma'''. In most cases, these incidentalomas are harmless non-functional adrenal adenomas. Incidentalomas are found on 0,3 – 5% of abdominal CT scans...") |
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Revision as of 20:16, 8 November 2023
Adrenal adenomas are small (1 – 5 cm), yellow, soft benign tumors of the adrenal cortex. Only a small percentage of them are functional (hormone-secreting), while the majority are non-functional.
Adrenal tumours are often discovered incidentally on CT imaging, giving them the nickname adrenal incidentaloma. In most cases, these incidentalomas are harmless non-functional adrenal adenomas. Incidentalomas are found on 0,3 – 5% of abdominal CT scans and are therefore quite common.
Evaluation
These tumours may grow or become malignant, and they may worsen other endocrine diseases like diabetes mellitus, osteoporosis, or hypertension. For these reasons, the patient must be evaluated for the likelihood for it being malignant and whether it’s hormonally active (Cushing syndrome, phaeochromocytoma, aldosteronoma).
Certain CT characteristics increase the risk of the incidentaloma being adrenal carcinoma. Benign findings include small size, smooth border, rapid contrast washout. Malignant findings include irregular shape, inhomogeneous density, and delayed contrast washout.
If phaeochromocytoma is suspected, 24-hour urinary metanephrines should be measured. Patients may undergo dexamethasone suppression test to detect subclinical Cushing syndrome.
Treatment
For indications of treatment, see adrenal tumours.