A 34-year-old woman is seen in endocrine clinic for evaluation of hypercortisolism. The results of her screening tests are as follow: Adrenocorticotropic hormone ACTH Elevated Urine free cortisol Elevated Cortisol (8 AM) after 1 mg of dexamethasone the night before Elevated Which of the following is the best next localization test?
سؤال مجاني 3 من 10 اليوم · اشترك وكمّل بدون حد
اعرض الإجابة
الإجابة والشرح
ادخل لحسابك عشان نحفظ إجاباتك ونوريك أخطاءك.
الإجابة: D. Pituitary MRI
Elevated urinary cortisol and failure to suppress on 1 mg dexamethasone confirm Cushing syndrome; high ACTH makes it ACTH-dependent, most often a pituitary adenoma. The localisation test in the sources is pituitary MRI. Adrenal CT is for ACTH-independent (low ACTH) disease, and adrenal vein sampling is used in primary hyperaldosteronism.
ليش كل خيار صح أو غلط
-
A
ليش غلط
Adrenal CT is for ACTH-independent Cushing syndrome (low ACTH); her ACTH is elevated.
✓ Adrenal summary.pdf · p. 2 -
B
ليش غلط
Adrenal venous sampling is used in primary aldosteronism to show the adrenal mass is the source of aldosterone excess, not in Cushing localization.
✓ Adrenal disorders (2).pdf · p. 17 -
D
ليش صح
High ACTH means ACTH-dependent Cushing syndrome, and imaging is an MRI of the pituitary gland.
✓ Adrenal summary.pdf · p. 2 -
E
ليش غلط
The listed pituitary imaging for ACTH-dependent Cushing is an MRI, not a CT.
✓ Adrenal summary.pdf · p. 2
- المصدر
- Adrenal summary.pdf · p. 2
6• Cushing's Syndrome & Disease [Notes].pdf · p. 6 - المحاضرة
- Cushing's Syndrome · Endocrinology · Module B
- ظهر في
- Endo bank