Endocrinol Metab > Volume 24(3); 2009 > Article
Journal of Korean Endocrine Society 2009;24(3):189-194.
DOI: https://doi.org/10.3803/jkes.2009.24.3.189    Published online September 1, 2009.
A Case of Improved Diabetes Mellitus After Removal of Nonfunctioning Adrenal Incidentaloma Diagnosed as Pheochromocytoma.
Se Kyung Park, Duk Su Kim, Mi Oh Roh, Min Soo Song, Chan Hee Jung, Jung Hwa Jung, Hyeong Kyu Park, Yeo Ju Kim, Ji Oh Mok, Sang Jin Kim, Chul Hee Kim, Dong Won Kim, Dong Won Byun, Kyo Il Suh, Myung Hi Yoo
1Department of Internal Medicine, Soonchunhyang University College of Medicine, Korea.
2Department of Pathology, Soonchunhyang University College of Medicine, Korea.
Abstract
Pheochromocytoma not only decreases insulin secretion but also increases insulin resistance. One third of patients with pheochromocytoma have diabetes mellitus and their clinical prognosis showed improvement after surgery. Until now, those patients whose prognosis for diabetes mellitus improved after the operation of pheochromocytoma had typical characteristics such as hypertension, palpitation, headache and elevated hormones such as Vanillylmandelic acid, metanephrine, epinephrine and norepinephrine. We present the case of a 75-year-old woman with asymptomatic adrenal incidentaloma identified as pheochromocytoma which exhibited normal biochemical test results, and after removal of the abdominal mass, her severe hyperglycemia improved.
Key Words: diabetes mellitus, nonfunctioning incidentaloma, pheochromocytoma


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