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Biomedical subjects

C A Gorman

Publications and source records attributed to C A Gorman.

At least 91 records · Page 5Linked to original sources
PubMed1978

Transient hyperthyroidism in patients with lymphocytic thyroiditis.

We have studied seven episodes of transient hyperthyroidism in three men and one woman, aged 19 to 38 years. No patient had fever or neck tenderness. All had palpable thyroid glands. Elevated serum thyroxine values persisted for 1 to 3 months. Thyroid131I uptake at 6 and 24 hours was low (1 to 3%). Erythrocyte sedimentation rates were normal or only slightly increased. Needle biopsy in four patients and a thyroidectomy specimen in one patient, all taken during the hyperthyroid phase, showed lymphocyte infiltration and extensive follicular disruption without oxyphilia. There was no evidence of granulomatous thyroiditis. Thyroglobulin antibodies were normal in all. In three patients, transient hypothyroidism followed the hyperthyroid episode. In two patients, the condition was recurrent. The findings are compatible with transient unregulated discharge of thyroid follicle content in some patients with lymphocytic thyroiditis. Recognition permits avoidance of unnecessary treatment with surgery, radioiodine, or antithyroid drugs.

Adult↗
PubMed1976

Gonadal radiation dose and its genetic significance in radioiodine therapy of hyperthyroidism.

Published estimates of radiation dose to the gonads from 131I therapy of Graves' disease vary widely, largely because of differences in assumptions regarding the details of iodine kinetics. The calculations described in this paper show that hyperthyroid patients treated with 10 mCi of 131I will usually receive a total radiation dose to the ovaries or testes of less than 3 rad. Several common roentgenographic diagnostic procedures may involve a greater radiation dose and a greater genetic hazard than does the usual 131I treatment for hyperthyroidism. It is important to minimize total exposure to radiation, but it seems unreasonable to deny 131I treatment for hyperthyroidism to young men and nonpregnant young women on the grounds of genetic hazard alone.

Female↗
PubMed1975

Measurement of triiodothyronine in unextracted urine.

A radioimmunoassay procedure to measure triiodothyronine (T3) in unextracted urine is described, and the results are compared with those obtained with different assays by others. It is assumed that the radioimmunoassayable T3 in urine represents free T3. Euthyroid subjects excreted 1.0 +/- 0.3 mug (mean +/- S.D.) in 24 hours. Similar values were obtained in pregnant women, sick patients without thyroid disease, and euthyroid patients receiving antithyroid agents. Values were about 3 times normal in patients with hyperthyroidism and about one-third of normal in patients with hypothyroidism. Estrogen, salicylate, or diphenylhydantoin therapy did not significantly alter the values. Radioimmunoassayable T3 increased after acid hydrolysis, suggesting that a fraction of the T3 in urine is present as an acid-hydrolyzable conjugate. However, it cannot be excluded that at least part of the T3 found after hydrolysis derives from monodeiodination of T4. This hydrolyzable fraction was about 25 per cents of the total T3 in urine. Measurements of T3 in urine are reliable and easy to perform. These measurements have little significance as a clinical test of thyroid function, but the assay may allow a new approach to understanding thyroid hormone metabolism and action, provided that deiodination of T4 during the procedure can be rigorously controlled and that the urinary T3 conjugates can be determined quantitatively.

Adult↗