Adrenal Nodules and Anxiety

Clinical Presentation

Pheochromocytomas can directly cause anxiety attacks as part of their clinical presentation, along with headaches, sweating, and palpitations 1
These tumors secrete excess catecholamines, which trigger the body's "fight or flight" response, mimicking severe anxiety 1
Adrenal adenomas that produce excess cortisol (Cushing's syndrome) can cause anxiety, depression, and sleep disturbances 3
Even mild autonomous cortisol secretion (MACS) from adrenal nodules can cause psychological symptoms including anxiety 2
For pheochromocytoma: anxiety attacks, headaches, palpitations, sweating, severe hypertension, tachycardia are clinical features suggesting hormone excess 1
For cortisol-producing tumors: weight gain, central obesity, fatigue, depression, sleep disturbances, proximal muscle weakness are clinical features suggesting hormone excess 3

All patients with adrenal incidentalomas should be screened for autonomous cortisol secretion using 1 mg dexamethasone suppression test (DST) 2
Plasma free metanephrines or 24-hour urinary metanephrines for suspected pheochromocytoma 2
Aldosterone/renin ratio for suspected primary aldosteronism in patients with hypertension and/or hypokalemia 2
Screening for pheochromocytoma should be performed in patients with adrenal incidentalomas that display ≥10 HU on non-contrast CT or who have signs/symptoms of catecholamine excess 2

Surgical removal (adrenalectomy) is recommended for functional adrenal tumors causing significant hormone excess and symptoms 4, 5
Medical management with specific medications may be appropriate in some cases, such as ketoconazole or mitotane for hypercortisolism 5, and spironolactone or eplerenone for hyperaldosteronism 4

Anxiety can have multiple causes, and the presence of an adrenal nodule doesn't automatically explain anxiety symptoms 6
Imaging characteristics alone cannot always reliably distinguish between benign and malignant adrenal masses, or functional vs. non-functional tumors 3
Pheochromocytomas can be misdiagnosed as primary anxiety disorders, leading to dangerous delays in treatment, according to the National Comprehensive Cancer Network 7
Some adrenal nodules may cause subclinical hormone excess that still contributes to anxiety symptoms but might be missed on routine testing 2