Biomedical subjects
Publications and source records attributed to G D Norsworthy.
Client-owned cats underwent surgery to remove palpable cervical masses in cats with normal total T4 values and no clinical signs of hyperthyroidism, renal disease, or hyperparathyroidism. Non-functional thyroid and parathyroid adenomas were found and identified by histopathological examination. The significance of these findings is discussed in relation to palpating a goiterous mass in an asymptomatic cat.
In 155 cats, both with and without clinical signs of hyperthyroidism, total thyroxine (TT4) concentrations were compared to a sensitive, semi-quantitative thyroid palpation technique. On the basis of TT4 concentrations, 23 of the 155 cats were classified as hyperthyroid. The size of individual thyroid glands was scored between '0' (non-palpable) and a maximum of '6'. One or more enlarged thyroid glands (score >0) were palpated in 22 of the 23 hyperthyroid cats and in 78 of the 132 euthyroid cats. However, none of the 132 euthyroid cats had a thyroid lobe score of greater than '3' whereas 18 of the 23 hyperthyroid cats had a thyroid lobe score of '4' or greater, and in two of the five that had scores below '4' there was evidence of intrathoracic functional thyroid tissue on scintigraphy.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.