Overview
Adrenal adenomas are benign tumors of the adrenal gland that can be functioning or non-functioning. Functioning adenomas may produce hormones such as cortisol, aldosterone, or other substances, leading to specific clinical syndromes 134.Diagnosis
Imaging: CT or MRI to identify adrenal masses 1.
Stimulation Tests: Synacthen stimulation test to assess adrenal function post-unilatera adrenalectomy; caution needed in interpretation due to variable cortisol responses 1.
Hormonal Assays: Measure baseline and stimulated cortisol levels, and specific hormone levels (e.g., aldosterone, gastrin) based on suspected function 134.
Dexamethasone Suppression Test: Evaluate for hypercortisolism preoperatively 1.Management
Surgical: Laparoscopic adrenalectomy for symptomatic or ruptured adenomas 2.
Medical Management: Address hormone excess with specific antagonists or inhibitors (e.g., mineralocorticoid receptor antagonists for aldosterone-producing adenomas) 3.
Post-operative Monitoring: Regular follow-up with hormonal assessments to ensure resolution of excess hormone production 1.Special Populations
Comorbidities: Patients with pheochromocytoma, primary aldosteronism, or indeterminate imaging characteristics may require surgical intervention despite variable preoperative cortisol suppression 1.
Ruptured Adenomas: Urgent laparoscopic adrenalectomy is a safe approach for managing spontaneous ruptures 2.Key Recommendations
Interpret synacthen stimulation test results cautiously following unilateral adrenalectomy due to variable cortisol responses 1 (Evidence: Moderate).
Laparoscopic adrenalectomy is a feasible and safe option for managing both symptomatic and spontaneously ruptured adrenal adenomas 2 (Evidence: Weak).
Consider preoperative hormonal profiling, including dexamethasone suppression tests, to guide surgical necessity in patients with indeterminate imaging 1 (Evidence: Moderate).References
1 Zaman S, Almazrouei R, Sam AH, DiMarco AN, Todd JF, Palazzo FF et al.. Synacthen Stimulation Test Following Unilateral Adrenalectomy Needs to Be Interpreted With Caution. Frontiers in endocrinology 2021. link
2 Suvikapakornkul R. Spontaneous rupture of an adrenal adenoma managed by laparoscopic adrenalectomy: a case report. Journal of the Medical Association of Thailand = Chotmaihet thangphaet 2014. link
3 Matsumoto F, Kameoka H, Kokado Y, Iida S. A case of weak mineralocorticoid-producing benign adrenal tumor. Urologia internationalis 1993. link
4 Petrek JA, Bradley EL. A gastrin-producing adrenal tumor?. Surgical gastroenterology 1984. link