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  • Title: Changes in Body Mass Index in Pheochromocytoma Patients Following Adrenalectomy.
    Author: Spyroglou A, Adolf C, Hahner S, Quinkler M, Ladurner R, Reincke M, Beuschlein F.
    Journal: Horm Metab Res; 2017 Mar; 49(3):208-213. PubMed ID: 28222463.
    Abstract:
    Catecholamine excess from pheochromocytoma results in cardiovascular symptoms such as arterial hypertension and tachycardia and induces metabolic alterations including glucose intolerance and increase in resting metabolic rate. The objective of our study was to investigate the effect of surgical cure of pheochromocytoma on body-mass-index and the correlation of body-mass-index changes to preoperative endocrine parameters. Pheochromocytoma patients from the Munich ENSAT Registry were matched (1:2) for age and gender to patients from the German Conn's Registry, who had undergone surgery for aldosterone-producing-adenomas. Thereby, 43 pheochromocytoma patients (17 males/26 females) and 86 aldosterone-producing-adenoma patients were analyzed for body-mass-index, blood pressure, and catecholamine levels before and one year after adrenalectomy. Seventy-four percent of pheochromocytoma patients were hypertensive preoperatively and 48% one year postoperatively. Systolic blood pressure did not differ significantly in pre- and postoperative measurements whereas diastolic blood pressure was significantly reduced over time. Moreover, pheochromocytoma patients gained body weight (p<0.001) one year following adrenalectomy accompanied by significant increases in body-mass-index, whereas aldosterone-producing adenoma patients displayed a slight weight loss. Despite weight gain, diagnosis of diabetes mellitus dropped from 9 of 43 investigated pheochromocytoma patients at baseline to 4 at follow-up. A significant correlation between body-mass-index changes to the preoperative catecholamine levels was found only for urinary normetanephrines. These data suggest that normalization of chronic catecholamine excess by adrenalectomy is associated with an increase in body-mass-index, which is more pronounced in patients with high preoperative levels of urinary normetanephrines.
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