Endocrinol Metab > Volume 26(2); 2011 > Article
Endocrinology and Metabolism 2011;26(2):160-165.
DOI: https://doi.org/10.3803/EnM.2011.26.2.160    Published online June 1, 2011.
A Case of Pituitary Adenoma with Simultaneous Secretion of TSH and GH.
Eun Young Lee, Cheol Ryong Ku, Hyun Min Kim, Woo Kyoung Lee, Jung Soo Lim, Sena Hwang, Do Hwan Kim, Dong Yeob Shin, Eun Jig Lee
1Division of Endocrinology and Metabolism, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea. ejlee423@yuhs.ac
2Department of Pathology, Yonsei University College of Medicine, Seoul, Korea.
Thyrotropin (TSH)-secreting pituitary adenoma is a very rare disease. In one-quarter of patients suffering from this disease, the pituitary tumor secretes other anterior pituitary hormones. Herein, we report a case of pituitary adenoma with simultaneous secretion of TSH and growth hormone (GH). A 34-year-old female visitied local hospital complaining of sweating, intermittent palpitation, and weight loss of 8 kg within 1 year. The patient had undergone trans-sphenoidal surgery 3 years prior for resolution of a TSH and GH co-secreting pituitary adenoma. She had been administered somatostatin analogue prior to visiting our hospital. The patient's GH levels were suppressed to below 1 ng/mL on the 75 g oral glucose tolerance test, and her basal insulin-like growth factor-I (IGF-I) level was within normal range. Thyroid function tests demonstrated increased levels of both free thyroxine and TSH. Sella-MRI revealed pituitary adenoma at the floor of the pituitary fossa, approximately 2 cm in height. Therefore, she was diagnosed with residual TSH-secreting pituitary adenoma. The patient again underwent trans-sphenoidal surgery and entered complete remission, based on hormone levels and MRI findings.
Key Words: Thyrotropin, Growth hormone, Pituitary adenoma

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