Thyrotropin-producing pituitary adenomas.

Abstract:

:To evaluate the biology of thyrotropin (TSH)-producing pituitary adenomas, the authors reviewed the charts of 19 patients who underwent transsphenoidal surgery within a 15-year period at the University of California, San Francisco (UCSF). Between 1989 and 1991, the period during which immunostaining techniques were used consistently for diagnosis, 2.8% of the pituitary adenomas treated at UCSF were TSH-producing. The rate of reoperation for tumor recurrence was 10.5%. Before pituitary surgery, more than one-third of the 19 patients had undergone thyroid ablation. Two patients had a history of Hashimoto's thyroiditis. The female:male ratio was 1.7:1. Women tended to develop these tumors at a younger age and had a longer history of symptoms but their tumors were smaller and less often invasive than those seen in men. About 50% of the tumors were purely TSH-producing and 50% were plurihormonal, including five that produced both TSH and adrenocorticotroph hormone. All tumors were macroadenomas. Before surgery, 46% of the patients had abnormal electrocardiographic findings; 16% had a rapid onset of severe neurological conditions either before or after surgery. It is concluded that TSH-producing adenomas are more common in patients who undergo surgical treatment than was previously thought. In addition, they occur more frequently in women, have a different biology in women than in men, and tend to be associated with potentially life-threatening cardiovascular and neurological complications.

journal_name

J Neurosurg

journal_title

Journal of neurosurgery

authors

Mindermann T,Wilson CB

doi

10.3171/jns.1993.79.4.0521

subject

Has Abstract

pub_date

1993-10-01 00:00:00

pages

521-7

issue

4

eissn

0022-3085

issn

1933-0693

journal_volume

79

pub_type

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