TY  - JOUR
T1  - PRimary hypothyroidism and the pituitary
AU  - Cohen K, Felig P
Y1  - 1979/08/01
N1  - 10.1001/archinte.1979.03630450009004
JO  - Archives of Internal Medicine
SP  - 855
EP  - 856
VL  - 139
IS  - 8
N2  - The availability of radioimmunoassay procedures for the measurement of thyroid-stimulating hormone (TSH) has simplified the differential diagnosis of primary vs secondary hypothyroidism. An elevation of the serum TSH level points to primary failure of the thyroid gland as the basis of the hypothyroidism. However, primary hypothyroidism may secondarily affect a variety of aspects of pituitary function, so that clinical tests evaluating pituitary hormone secretion may lose their diagnostic value.1 Impaired secretion of growth hormone, delayed gonadotropin responses to luteinizing hormone-releasing factor, decreased adrenocorticotropic hormone release, and increased basal and stimulated prolactin levels have been reported in primary hypothyroidism.1 Two additional findings that may be of particular clinical importance are the occurrence of amenorrhea-galactorrhea2 and sellar enlargement, suggesting the presence of a pituitary tumor.3The term "amenorrhea-galactorrhea syndrome" has taken on a new meaning in recent years. Increasingly sophisticated endocrine, radiological, and neurosurgical skills have decreased the
SN  - 0003-9926
M3  - doi: 10.1001/archinte.1979.03630450009004
UR  - http://dx.doi.org/10.1001/archinte.1979.03630450009004
ER  -