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- Original Article A Clinical study on the diagnesis and Treatment of Cushing's Disease - The significance of bilateral inferior petrosal sinus sampling -.
- Seong Yeon Kim, Kyung Soo Park, Bo Youn Cho, Hong Kyu Lee, Jae Seok Jeon, Hyeong Kyu Park, Chang Soon Koh, Hun Ki Min, Heu Won Jeong, Dae Hee Han, Moon Hee Han, Kee Hyun Jang
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Endocrinology and Metabolism 1994;9(2):115-120
Published online: November 6, 2019
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Abstract
Bilateral inferior petrosal sinus sampling(IPSS) is known to be useful for the differential diagnosis of ACTH-dependent Cushing's syndrome and for the preoperative localization of pituitary microadenomas.To evaluate the usefulness of IPSS, we performed the procedure in the 17 cases of ACTH-dependent Cushing's syndrome including 2 cases of macroadenomas, 6 of them with CRH stimulation test. A inferior petrosal sinus-to-peripheral ACTH ratio of 2:1 or greater(3:1 after CRH stimulation) indicates a pituitary source of ACTH hypersecretion, and a ratio of the ACTH level in one inferior petrosal sinus to the ACTH level in the other of 1:4 or greater lateralizes the microadenomas to that half of the pituitary gland.With these criteria, we diagnosed Cushing's disease in 15 of 17 cases of ACTH-dependent Cushing's syndrome, and localized the lesion in 8 of 13 cases of microadenoma.In conclusion, IPSS with CRH stimulation has high diagnostic accuracy in the differential diagnosis of ACTH-dependent Cushing's syndrome, but still has the limitations on the localization of microadenoma.
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