Korean J Med.  2015 Jun;88(6):737-741. 10.3904/kjm.2015.88.6.737.

A Case of Thyrotropin (TSH)-Secreting Pituitary Adenoma in a Patient with Ankylosing Spondylitis

Affiliations
  • 1Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea. sglee@pnuh.co.kr
  • 2Department of Internal Medicine, Kosin University College of Medicine, Busan, Korea.

Abstract

A thyrotropin (TSH)-secreting pituitary adenoma is a rare cause of hyperthyroidism, with an incidence of one case per million. Ankylosing spondylitis (AS) is a chronic inflammatory rheumatic disease of the axial skeleton. Extra-articular manifestations, such as anterior uveitis, may also be prominent features in AS but little is known about the association between AS and thyroid diseases including TSH-secreting pituitary adenomas. We present a case study of a 26-year-old male AS patient who was diagnosed with a TSH-secreting pituitary adenoma using a thyrotropin releasing hormone stimulation test, measurement of the TSH alpha-subunit, and magnetic resonance imaging, and subsequently treated with a transsphenoidal tumor resection.

Keyword

Pituitary neoplasms; Thyrotropin; Spondylitis, Ankylosing

MeSH Terms

Adult
Humans
Hyperthyroidism
Incidence
Magnetic Resonance Imaging
Male
Pituitary Neoplasms*
Rheumatic Diseases
Skeleton
Spondylitis, Ankylosing*
Thyroid Diseases
Thyrotropin*
Thyrotropin-Releasing Hormone
Uveitis, Anterior
Thyrotropin
Thyrotropin-Releasing Hormone
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