Ectopic ACTH Syndrome with Pulmonary Thromboembolism or Other Life-Threatening Complications — When Combination Medical Therapy Fails to Control Hypercortisolism
In Ectopic ACTH syndrome, profound hypercortisolism can precipitate life-threatening emergencies. When urgent medical treatment with combination steroidogenesis inhibitors does not achieve cortisol control, an alternative approach is required without delay.
Clinical Scenario
This protocol addresses patients with life-threatening complications of Cushing's syndrome, including:
- Pulmonary thromboembolism
- Severe infection
- Cardiovascular complications
- Acute psychosis
The severity of hypercortisolism is reflected by urine free cortisol exceeding five times the upper limit of normal.
Previous Treatment & Failure Condition
An urgent effort to reduce cortisol was made using combination steroidogenesis inhibitors — mitotane, metyrapone, and ketoconazole — or intravenous etomidate when oral medications could not be taken, and mifepristone for acute steroid psychosis.
The target was reduction of urine free cortisol to near normal within 24–48 hours, or a stable serum cortisol in the defined range with etomidate. This protocol applies when that target is not reached and hypercortisolism remains uncontrolled despite aggressive medical management.
Next Step — Overview
When medical management is insufficient, bilateral adrenalectomy may be considered as a life-preserving emergency measure — the complete protocol specifies the indications, patient selection, and what must be managed alongside the procedure.
Full criteria, procedural context, and peri-operative considerations are available in the complete protocol below.
References
DOI: 10.1210/jc.2015-1818
- We recommend urgent treatment (within 24 – 72 h) of hypercortisolism if life-threatening complications of CS such as infection, pulmonary thromboembolism, cardiovascular complications, and acute psychosis are present.
- Many experienced clinicians suggest specific treatments for each condition (eg, anticoagulation prophylaxis and prophylaxis for Pneumocystis jiroveci with trimethoprim-sulfamethoxazole [or dapsone in patients with sulfa allergies]), especially for bedridden or low-mobility patients or those with UFC > 5-fold normal.
- We suggest bilateral adrenalectomy for occult or metastatic EAS or as a life-preserving emergency treatment in patients with very severe ACTH-dependent disease who cannot be promptly controlled by medical therapy.
- Bilateral adrenalectomy provides immediate hypercortisolism control and can be lifesaving.
- If aggressive medical management does not control hypercortisolism, clinicians should consider bilateral adrenalectomy even in high-surgical-risk patients.
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