We return to Dr. Dewing in our Chapter 36. He was, in 1965, Associate Clinical Professor of Radiology at New York University Postgraduate Medical School. Today, such doses are commonly referred to as high doses. However, whenever readers attempt to compare doses, they must keep at least three distinctions in mind. The data of Hammar and Boyd, in particular, indicate that the weights which had been considered to be those of normal glands have, in actuality, been those of glands reduced in size by inanition and disease.
Thymic tissue is extremely sensitive to the general nutritional status of the body.
At page 1165, Dr. Nelson expressed a very negative opinion about obstruction of respiration by the thymus gland. Once considered as the most frequent cause of laryngeal and tracheal stridor, many clinicians of wide experience now think it is never a factor. It has been shown that laryngeal stridor and attacks of apnea and cyanosis can be explained otherwise in the majority of instances if a careful study is made. The strongest arguments that a thymic enlargement is responsible for respiratory obstruction are the bronchoscopic observations of Jackson and the roentgenologic studies of Pancoast. However, there may well be some doubt that the thymus causes compression of the trachea in any significant number of instances.