Which of the following agents is not used in management of Cushing syndrome?
**Core Concept**
Cushing syndrome is a hormonal disorder caused by excess levels of cortisol in the body, which can be due to various factors such as pituitary tumors, adrenal tumors, or long-term use of corticosteroids. Management of Cushing syndrome typically involves medications that can help reduce cortisol production or block its effects.
**Why the Correct Answer is Right**
The management of Cushing syndrome involves various pharmacological agents that can help control cortisol levels. **Ketoconazole** is an antifungal medication that also inhibits cortisol production by blocking the enzyme 17,20-desmolase, which is involved in cortisol synthesis. **Metyrapone** is another medication that inhibits cortisol production by blocking the enzyme 11β-hydroxylase. **Mitotane** is a medication that is used in the management of Cushing syndrome caused by adrenal tumors, as it can help reduce cortisol production. **Bromocriptine** is a dopamine agonist that is used in the management of prolactinomas and other pituitary tumors, but it is not typically used in the management of Cushing syndrome.
**Why Each Wrong Option is Incorrect**
**Option A:** Ketoconazole is used in the management of Cushing syndrome, so this option is incorrect.
**Option C:** Metyrapone is used in the management of Cushing syndrome, so this option is incorrect.
**Option D:** Mitotane is used in the management of Cushing syndrome, especially in cases caused by adrenal tumors, so this option is incorrect.
**Clinical Pearl / High-Yield Fact**
Ketoconazole is a unique medication that has off-label uses in the management of Cushing syndrome, but it is essential to monitor liver function and electrolyte levels when using this medication.
**Correct Answer:** B. Bromocriptine is not used in the management of Cushing syndrome.