Pituitary hyperplasia mimicking thyrotropin-producing pituitary adenoma in the patient with resistance to thyroid hormone: a case report.
Int J Neurosci
; 132(2): 207-211, 2022 Feb.
Article
in En
| MEDLINE
| ID: mdl-32727243
ABSTRACT
The syndrome of inappropriate thyroid-stimulating hormone (TSH) secretion is characterized by high circulating thyroid hormone concentrations in the presence of non-suppressed TSH. After exclusion of the laboratory interference, TSH-secreting pituitary adenoma (TSHoma) or resistance to thyroid hormone-beta (RTH-ß) should be suspected. The presence of a pituitary adenoma on the hypothalamic-pituitary imaging supports the diagnosis of TSHoma. However, the incidental findings of non-functioning pituitary adenomas may appear in patients with RTH-ß. Abnormal MRI finding in the RTH-ß patient also includes pituitary enlargement from thyrotroph hyperplasia. We herein reported a patient with inappropriate TSH secretion who has pituitary hyperplasia mimicking TSHoma. This case illustrates the diagnostic tests to distinguish an RTH-ß from TSHoma.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pituitary Neoplasms
/
Adenoma
/
Thyroid Hormone Resistance Syndrome
Type of study:
Diagnostic_studies
Limits:
Humans
Language:
En
Journal:
Int J Neurosci
Year:
2022
Document type:
Article
Affiliation country:
Thailand