Metastatic Medullary Thyroid Cancer with Cushing's Syndrome When Medical Cortisol Control Has Failed

Clinical Scenario

This protocol applies to patients with metastatic medullary thyroid carcinoma who have developed Cushing's syndrome due to ectopic production of ACTH or CRH. These patients are often markedly debilitated and warrant active management despite their poor prognosis.

Prior Line Did Not Achieve Goal

Medical therapy to control cortisol excess — including agents such as ketoconazole, mifepristone, aminoglutethimide, metyrapone, or mitotane — did not achieve normalization of elevated serum cortisol levels. This protocol represents the next step when the medical approach is refractory.

Next-Line Approach (Overview)

When medical therapy has failed to normalize cortisol levels, the protocol specifies a surgical intervention targeting the adrenal glands. The full decision criteria, patient selection, and procedural details are available in the complete protocol.

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References

DOI: 10.1089/thy.2014.0335

Patients with metastatic MTC and Cushing's syndrome due to ectopic production of ACTH or CRH are often markedly debilitated and should be treated despite their poor prognosis.
The most common ectopic hormones, CRH or ACTH, can cause Cushing's syndrome.
In cases refractory to medical treatment bilateral adrenalectomy is an option.

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