Abstract
THYROID.
One lobe of the thyroid of a dog was removed and replaced with reversal of the circulation, i. e., the central end of the superior thyroid artery was anastomosed to the peripheral end of the superior thyroid vein, and the central end of the vein was anastomosed to the peripheral end of the artery.
After a lapse of more than two years the lobes of the gland were compared and specimens were taken and examined microscopically.
Results. — The unoperated lobe in size was somewhat hyper-normal (perhaps compensatory hypertrophy) and microscopically showed hyperplasia. The operated (auto-engrafted) lobe in size was hyponormal. Structurally, it was markedly fibrous; but it was found to contain cellular elements which appeared normal and normally staining colloid, the arrangements and proportions being abnormal.
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