Studies on the Human Thyroid in Iceland

c, iodiTlapters aro devoted to the gross anatomy, histology, hyDl , c?ntent of the gland, effect of diseases, Plasia and the frequency of nodes. siQap0 ^yroid gland in Iceland appears to be very ?i2e as compared with the commonly accepted normal inteVpar iodine content is rather highIt is in thP +ng note that remarkably small variation of jj. total iodine occurs in different localities in spite Tu extremely wide variation in size of the glands, in m?. iodine intake is largely the determining factor \Vhen 'fuming its concentration in the thyroid gland, below tota.^ i?dine, not merely the percentage, falls PenSat a certain value, hyperplasia sets in as a comsurfao 0r-v taction in order to increase the absorbing ^?dine? rfu hereby enable the gland to bind more by ajy." CKber factors may induce hyperplasia, probably No ? ? *^e iodine requirement or utilization. as a rSlgl*ificant variation was observed in the gland diseased ^'seases ?f ?ther organs or generalized