PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “Pituitary Function Tests”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 235 records · Page 13Linked to original sources
PubMed1998

Reversible hypothyroidism in empty sella syndrome: a case report.

A 33 year-old Japanese woman complained of generalized fatigue, recurrent infections and gradual weight loss 1 year after her first delivery. During delivery, no excessive bleeding or change in blood pressure was noted. On endocrinologic examination 2 years after delivery, she was found to have severe adrenal insufficiency and hypothyroidism. Pituitary function tests revealed impaired responses of ACTH, PRL and gonadotropins, and normal response of GH. TSH response to TRH was delayed but not exaggerated. Cranial magnetic resonance imaging showed an empty sella. The adrenal glands were responsive to extrinsic ACTH, and adequately accumulated 123I-aldosterol. Antipituitary and antithyroid autoantibodies were detected in her serum. She was diagnosed with partial hypopituitarism associated with empty sella syndrome. Approximately 2 months after administration of cortisone acetate 25 mg/ day her general condition was noticeably improved, with normalization of thyroid function and improvement of gonadotropin responses to GnRH. This case suggests that a physiologic dose of glucocorticoid is necessary to maintain not only thyroid function but also some of the remaining pituitary functions in patients with empty sella syndrome manifesting hypopituitarism.

Adult↗
PubMed1984

Pituitary thyrotroph hyperplasia mimicking prolactin-secreting adenoma.

A 32-year-old woman with persistent postpartum galactorrhea, hyperprolactinemia and a sellar configuration compatible with pituitary adenoma underwent transsphenoidal surgery. Mild hyperthyroidism had been suspected clinically preoperatively and thyroxine plus cortisol therapy was given. Morphological features of pituitary thyrotroph hyperplasia were present as shown by light microscopy, immunoperoxidase staining and electron microscopy. The thyrotroph hyperplasia was secondary to primary hypothyroidism as demonstrated by the TSH response to TRH stimulation and subsequent suppression with thyroid hormone treatment. Although prolonged severe hypothyroidism has been reported to cause pituitary enlargement, this is the first case of thyrotroph hyperplasia with detailed morphologic study of the surgically-removed adenohypophysial tissue. The presentation of this patient calls attention to the possibility of mistaking pituitary enlargement due to primary hypothyroidism for a prolactinoma.

Adenoma↗
PubMed1978

Acromegaly and galactorrhea-amenorrhea with two pituitary adenomas secreting growth hormone or prolactin. A case report.

A prolactinoma was removed from a nulliparous woman who had acromegaly, galactorrhea-amenorrhea, elevated serum growth hormone and prolactin, and hypogonadotropinism. Postoperatively galactorrhea decreased and cyclic vaginal bleeding ensued; serum prolactin concentration was normal but growth hormone remained elevated and the acromegalic complex was unchanged, even after subsequently administered bromocriptine. At a second transsphenoidal operation, an adenoma of somatotropes was removed; improvement in symptoms and signs and normalisation of pituitary function, including growth hormone, followed. The possible presence of distinctly separate pituitary adenomas should be considered in patients with galactorrhea associated with acromegaly.

Acromegaly↗
PubMed1992

[The function of the hypophyseal-thyroid system in the children of Zhitomir Province living in areas polluted by the radionuclides resulting from the accident at the Chernobyl Atomic Electric Power Station].

A study of 1167 children (age: 7-15 years) inhabiting districts contaminated with radionuclide due to Chernobyl atomic station accident indicates that children with thyroid hyperplasia revealed high requirement and intensity of the peripheral metabolism of thyroid hormones that results finally in relative hormonal deficit (subclinical hypothyroidism) and thyroid hyperplasia. This is a sequel of maximum functional tension of the thyroid with impending breakdown of adaptation and this should be considered as a pathological process requiring correction, i.e. presence of subclinical hypothyroidism in children with thyroid hyperplasia requires substitution therapy with thyroid hormones.

Accidents↗
PubMed1991

[Status of the thyroid gland in patients with schizophrenia].

A study was made of pituitary-thyroid function in patients with different forms of schizophrenia. Radioimmunoassay was used. All the patients with schizophrenia showed impairment of interrelations within the pituitary-thyroid system, which manifested by accumulation in the peripheral blood of metabolically active T3 due to enhanced degradation of T4 in the peripheral tissues. The rise of TTH concentration represents one of the mechanisms of correction, aimed at the attainment of the physiological content of T4 at the expense of its additional output for its level in the blood serum is appreciably reduced.

Humans↗
PubMed1992

Computed tomographic correlation with pituitary function in Sheehan's syndrome.

Twenty six patients with Sheehan's syndrome were studied with high-resolution computed tomography (CT) and the sequential pituitary stimulation test in order to correlate the CT findings of the sella turcica with the pituitary reserve functions. CT revealed 21 completely empty sella (CES), 4 partially empty sella (PES) and 1 normal sella. Panhypopituitarism occurred in 1 of 4 patients with PES and 20 of 21 with CES. One patient showing normal sella had a normal preservation of prolactin (PRL), thyroid stimulating hormone (TSH), follicle stimulating hormone (FSH) and lutenizing hormone (LH). In all patients with PES and CES, growth hormone (GH) responses to hypoglycemia and PRL responses to thyrotropin releasing hormone (TRH) were blunted. Three (75.0%) with PES had normal basal cortisol levels, which were more frequent than two (9.6%) with CES; however, most of the PES (3 of 4) and CES (20 of 21) demonstrated blunted cortisol responses to hypoglycemia. Three (75.0%) with PES and only one (4.8%) with CES had normal thyroxine levels and TSH responses to TRH. None with PES showed decreased basal and stimulated levels of FSH and LH, whereas 15 of 21 with CES did. The pituitary functions of the patients having considerable amounts of pituitary remnants visualized by CT were relatively preserved for TSH, cortisol, FSH and LH. Considering the above results, changes in the amounts of pituitary remnants detected by CT might correlate with hormonal secretory capacity.

Adult↗