Adrenalectomy – Adrenal Gland Surgery Explained
An adrenalectomy is the surgical removal of one or both adrenal glands. It is performed to treat tumors or hormonal disorders affecting the adrenal glands.
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An adrenalectomy is the surgical removal of one or both adrenal glands. It is performed to treat tumors or hormonal disorders affecting the adrenal glands.
What is an Adrenalectomy?
An adrenalectomy is a surgical procedure to remove one or both adrenal glands. The adrenal glands are two small, triangular-shaped glands located on top of each kidney. They produce vital hormones including adrenaline (epinephrine), cortisol, and aldosterone. An adrenalectomy is indicated when one or both glands develop a tumor or a condition that disrupts normal hormone production.
Indications – When is an Adrenalectomy Performed?
There are several medical conditions that may require removal of an adrenal gland:
- Pheochromocytoma: Usually a benign tumor that produces excess adrenaline and noradrenaline, leading to dangerous spikes in blood pressure.
- Conn Syndrome (Primary Hyperaldosteronism): Overproduction of aldosterone due to an adrenal adenoma, causing severe hypertension and low potassium levels.
- Cushing Syndrome: Excess cortisol production by an adrenal tumor, resulting in symptoms such as weight gain, skin changes, and muscle weakness.
- Adrenocortical Carcinoma: A malignant tumor of the adrenal cortex requiring surgical removal.
- Adrenal Metastases: Secondary spread of cancers from other organs to the adrenal gland.
- Incidentaloma: An adrenal mass discovered incidentally during imaging for another condition, which may require removal after further evaluation.
Surgical Approaches
Laparoscopic (Minimally Invasive) Adrenalectomy
The gold standard for most adrenalectomies today is the laparoscopic approach. The surgeon removes the adrenal gland through small incisions using a camera (laparoscope) and specialized instruments. This technique results in less pain, faster recovery, and fewer complications compared to open surgery.
Retroperitoneoscopic Adrenalectomy
In this technique, the surgeon accesses the adrenal gland from the back, without entering the abdominal cavity. It is particularly suitable for smaller tumors and offers advantages in terms of recovery time and risk of complications.
Open Adrenalectomy
For very large tumors, suspected malignancy, or anatomically complex cases, an open surgical approach through a larger abdominal incision may be necessary. While this provides better visibility and access, it requires a longer recovery period.
Preoperative Preparation and Diagnosis
Before surgery, a thorough diagnostic workup is performed:
- Blood and urine hormone tests (cortisol, aldosterone, urinary catecholamines)
- Imaging studies such as CT scan (computed tomography) or MRI (magnetic resonance imaging) to precisely locate the lesion
- For pheochromocytoma: preoperative medication to stabilize blood pressure (usually alpha-blockers)
Risks and Complications
As with any surgical procedure, there are potential risks involved:
- Intraoperative or postoperative bleeding
- Wound infection
- Injury to adjacent organs such as the kidney, spleen, or liver
- Hormonal imbalances following surgery
- In bilateral adrenalectomy: lifelong hormone replacement therapy is required due to adrenal insufficiency
Recovery and Follow-Up Care
After a laparoscopic adrenalectomy, most patients are discharged within 2–4 days. Full recovery typically takes 2–4 weeks. If only one adrenal gland is removed, the remaining gland generally compensates and takes over full hormone production. Following a bilateral adrenalectomy, patients require lifelong hormone replacement with hydrocortisone and, in most cases, fludrocortisone. Regular follow-up with an endocrinologist is essential after surgery to monitor hormone levels and overall health.
References
- Fassnacht M. et al. – Management of adrenal incidentalomas: European Society of Endocrinology Clinical Practice Guideline. European Journal of Endocrinology, 2016.
- Lenders J.W.M. et al. – Phaeochromocytoma and paraganglioma: an Endocrine Society clinical practice guideline. Journal of Clinical Endocrinology and Metabolism, 2014.
- Walz M.K. et al. – Posterior retroperitoneoscopic adrenalectomy – results of 560 procedures in 520 patients. Surgery, 2006.
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