EVALUATION OF RESULTS OF RADIATION TREATMENT OF PITUITARY CHROMOPHOBE ADENOMAS PRODUCING VISUAL IMPAIRMENT.
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An elderly male patient with advanced prostatic adenocarcinoma, requiring increasing analgesia, underwent interstitial pituitary irradiation by implantation of yttrium-90. He was temporarily relieved of his pain. Assessment of his anterior pituitary function showed only partial ablation. He therefore underwent a second implantation. This achieved complete ablation, and only when this was achieved did he experience full and sustained pain relief. We recommend assessment of anterior pituitary function in patients treated by pituitary ablation for carcinoma of the prostate, and especially in those in whom the disease progresses after initial success response.
The substance isolated from the anterior pituitary and responsible for the induction of thyroid hyperplasia in the tadpole (TSH) is not invariably found in increased amounts in the blood of patients with exophthalmos. The blood concentration of this substance is inversely related to the level of thyroid activity. Thyroid extract, pituitary irradiation and adrenocorticotropic hormone have not been shown conclusively to alter the course of exophthalmos.