Publications by authors named "Paul C Carpenter"

Purpose: To assess safety, technical success, local control, and survival associated with percutaneous image-guided adrenal ablation.

Materials And Methods: Adult patients with adrenal metastases who underwent percutaneous image-guided adrenal ablation during the years 2003-2012 were identified. There were 32 patients with 37 adrenal tumors identified.

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Purpose: To assess safety, technical success, complications, and hemodynamic changes associated with the adrenal cryoablation procedure.

Materials And Methods: This retrospective review was approved by the institutional review board, with waiver of informed consent, and was compliant with the Health Insurance Portability and Accountability Act. Adult patients with adrenal metastasis who were treated with adrenal cryoablation between May 2005 and October 2009 were eligible for this review.

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Objective: To assess whether the type of surgical approach to the sella (sublabial transseptal vs transnasal) affects surgical outcome among patients with Cushing disease.

Participants And Methods: Both procedures were performed at our institution from January 1, 1995, through January 31, 2003. From a total of 106 patients with Cushing disease who had had surgery, we identified 42 adults undergoing an initial surgery, with microadenoma (<1 cm) determined by magnetic resonance imaging and a minimal follow-up of 3 months.

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Background: Cushing's syndrome (CS), due to multiple etiologies, is a disorder associated with the ravages of cortisol excess. The purpose of this review article is to provide a historical synopsis of surgery for CS, review a recent 10-year period of operative management at a tertiary care facility, and to outline a practical approach to diagnosis and management.

Materials And Methods: From 1996 to 2005, 298 patients underwent 322 operative procedures for CS at Mayo Clinic, Rochester, Minnesota.

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Background: Management of patients with bilateral adrenal masses and corticotropin (ACTH)-independent Cushing syndrome (CS) or subclinical CS is problematic. We report our experience with adrenal venous sampling (AVS) in the evaluation of 10 patients with bilateral masses who had ACTH-independent CS or subclinical CS.

Patients And Methods: Ten patients (9 women, 1 man, mean age 56.

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Context: Ghrelin is a 28-amino-acid Ser(3)-octanoylated peptide, and CRH is a 41-amino-acid peptide, both of which stimulate ACTH secretion. In principle, actions of these agonists could be subject to inhibitory modulation by hypothalamic somatostatin (SS).

Objective: Our objective was to test the hypothesis that endogenous SS restrains ghrelin and CRH-stimulated ACTH secretion, thereby linking all three, ghrelin, CRH, and SS, with ACTH secretion.

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Performance-enhancing drugs in sport.

Endocrinol Metab Clin North Am

June 2007

This discussion reviews the concept and history of ergogenic aides, the penetration of use in society, some benefit/risk information, drug sources in our society, detection and regulation of these agents, and provides a look to the future. It also examines the role of the clinician/endocrinologist for these patients and uses some cases as examples of drug use among adolescents/teens.

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Context: The definitive diagnosis of Cushing's syndrome (CS) in the setting of mild disease, as well as exclusion of CS in the setting of conditions that might mimic this clinical entity (pseudo-Cushing's syndrome), continues to present a significant challenge to the clinician.

Objective: The aim of the study was to review characteristics of the combined dexamethasone-suppressed CRH stimulation test in patients evaluated at an academic center for the possibility of mild CS.

Design, Patients, And Methods: We conducted a retrospective review of 66 patients.

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Background: Decreased libido is one of several changes in sexual function that are often experienced by female cancer patients. Transdermal testosterone therapy has been associated with increased libido among estrogen-replete women who report low libido.

Methods: In a phase III randomized, placebo-controlled crossover clinical trial, we evaluated whether transdermal testosterone would increase sexual desire in female cancer survivors.

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Context: Ghrelin is a 28-amino acid, Ser(3)-octanoylated peptide that stimulates GH secretion in vivo and in vitro. Beyond the capability of ghrelin to synergize with GHRH, little is known about multipeptide modulation of ghrelin's actions in humans.

Objective: The objective of this study was to test the hypothesis that ghrelin can stimulate GH secretion in the absence or presence of somatostatin withdrawal (induced by l-arginine infusion) and stress-like drive by CRH.

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The authors present the case of a 58-year-old woman who presented with symptoms of diabetes insipidus (DI) 1 year after she was found to have a Stage 3 (of 4) estrogen receptor-positive infiltrating ductal adenocarcinoma of the left breast with pulmonary and bone metastases. Magnetic resonance images demonstrated a solitary site of metastasis in the patient's pituitary stalk, and gamma knife surgery (GKS) was performed to treat the lesion. Three months after GKS the patient was able to reduce the medication she required for the DI.

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Inhaled glucocorticosteroids (ICS) are commonly prescribed for chronic obstructive pulmonary disease. No adverse effect on bone mineral density (BMD) has been proven. In a randomized double-blind, placebo-controlled trial at seven centers in North America, we recruited 412 current smokers or recent quitters with mild to moderate chronic obstructive pulmonary disease.

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Objective: Distinguishing between pituitary-dependent Cushing's syndrome (CS) and occult ectopic ACTH syndrome can be extremely difficult. Bilateral inferior petrosal sinus sampling has been shown to have the highest diagnostic accuracy in this subtype evaluation. Internal jugular vein sampling (IJVS) has been reported as a potentially safer invasive alternative, but data are limited.

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Objective: To evaluate tumor control rates and complications after stereotactic radiosurgery for patients with nonfunctioning pituitary adenomas.

Methods: Between 1992 and 2000, 33 patients underwent radiosurgery for treatment of nonfunctioning pituitary adenomas. Thirty-two patients (97%) had undergone one or more previous tumor resections.

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Objective: Speech recognition promises to reduce information entry costs for clinical information systems. It is most likely to be accepted across an organization if physicians can dictate without concerning themselves with real-time recognition and editing; assistants can then edit and process the computer-generated document. Our objective was to evaluate the use of speech-recognition technology in a randomized controlled trial using our institutional infrastructure.

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