Abstract
Thyroid-stimulating hormone and prolactin (PRL) were measured in a group of 149 women with galactorrhea. Three of these patients were found to have primary hypothyroidism. In the remaining 146 patients, the PRL assay was correlated with the menstrual history and the results of hypocycloidal polytomography. Sixty-two per cent of these patients had hyperprolactinemia and 35 per cent had abnormal tomograms. Nine patients with abnormal x-rays had normal prolactin levels. None of the patients with normal menses and normal PRL was found to have an abnormal x-ray. Fourteen of the 15 patients with PRL levels greater than 200 ng. per milliliter had abnormal tomograms. Almost 70 per cent of patients with secondary amenorrhea and low estrogen status had abnormal x-rays. In patients with oligomenorrhea and secondary amenorrhea with normal estrogen status, it was not possible to differentiate between patients with normal or abnormal tomograms based on the level of serum PRL. Polytomography remains the single most important diagnostic test in establishing the presence of a pituitary tumor.
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