Sunday, December 23, 2012
Friday, December 21, 2012
Thursday, December 20, 2012
Extrapituitary Parasellar Microadenoma in Cushing's
Negative sellar exploration, despite the results of endocrine evaluation indicating Cushing's disease, the high incidence of failure of total hypophysectomy, and remission of Cushing's syndrome after sellar irradiation, suggest that the etiology of refractory Cushing's disease in many patients lies near the sella but is not in the pituitary gland. In such patients, the diagnostic and surgical effort should consider the identification and selective resection of an extrapituitary parasellar adenoma and the avoidance of total hypophysectomy and adrenalectomy, which necessitate life-long hormonal replacement therapy and risk development of Nelson's syndrome (21, 27).
Monday, December 17, 2012
Sunday, December 9, 2012
Saturday, December 1, 2012
Therapy of adrenal insufficiency: an update
Friday, November 30, 2012
Articles from are provided here courtesy of Hindawi Publishing Corporation
Tuesday, November 27, 2012
After my first pituitary surgery, I developed ptosis, or drooping eyelid.
Cushing’s: the worst case scenario
Endocrine Abstracts (2008) 15 S58
Monday, November 26, 2012
A Comparison of the Use of Urinary Cortisol to Creatinine Ratios and Nocturnal Salivary Cortisol in the Evaluation of Cyclicity in Patients with Cushing's Syndrome
1. U. M. Graham,
2. S. J. Hunter,
3. M. McDonnell,
4. K. R. Mullan and
1. Regional Centre for Endocrinology and Diabetes (U.M.G., S.J.H., K.R.M., A.B.A.) and Regional Endocrine Laboratory (M.McD.), Royal Victoria Hospital, Belfast BT12 6BA, United Kingdom
1. Address all correspondence and requests for reprints to: Dr. Una Graham, Regional Centre for Endocrinology and Diabetes, Royal Victoria Hospital, Grosvenor Road, Belfast BT12 6BA, United Kingdom. E-mail: firstname.lastname@example.org.
Context: Cyclical Cushing's syndrome is detected in our center by collecting sequential early morning urine (EMU)* samples for cortisol to creatinine ratio over 28 d. The Endocrine Society suggests that nocturnal salivary cortisol (NSC)* may be used to assess patients for cyclical Cushing's. However, there is only very limited evidence that it correlates with early morning urine testing or that it demonstrates cycling over 28 d.
Objective: We sought to correlate nocturnal salivary cortisol with early morning urine results collected the following morning and to determine whether nocturnal salivary cortisol could be used to detect cyclical Cushing's.
Design and Setting: An observation study of 28-d collections for nocturnal salivary cortisol and early morning urine was performed in a tertiary referral center over 1 yr.
Patients: A 28-d collection of nocturnal salivary cortisol and early morning urine was performed in 10 patients with confirmed or suspected Cushing's syndrome.
Main Outcome Measure: The main outcome of the study was the correlation of salivary and urinary cortisol with graphical assessment of results for cycling.
Results: Eleven collections were performed. One patient with cyclical Cushing's completed the collection before and after cabergoline therapy. Two hundred seventy matched salivary and urinary results were correlated (r = 0.79; P < 0.001). In two patients with cyclical Cushing's, early morning urine and nocturnal salivary cortisol followed a similar cyclical pattern. In one patient with recurrent cyclical Cushing's, cortisol was elevated in both saliva and urine but with more prominent cycles in saliva.
Conclusion: Nocturnal salivary cortisol correlated well with early morning urine (EMU). Nocturnal salivary cortisol detected all cases of cyclical Cushing's. Therefore, nocturnal salivary cortisol may prove to be an additional option or replacement for early morning urine in detecting cyclical Cushing's syndrome.