38 may have some degree of growth retardation,also show evidence of hypofunctioning glands or glands that are functioning at maximum capacity, based on results of thyroid function studies (elevated serum TSH levels or little or no response in '3"I uptake following TSH stimulation). One of these (No. 65) had a low serum thyroxine level. The adults with thyroid nodules (Nos. 59 and 64) and two of the children (Nos. 42 and 61) had normal responses to TSH. Severalof the studieslisted in Table 20 were performed after subtotal thyroid- ectomy (Nos. 17, 21, 69, 2, and 20). The results indicate inadequatefunction of the thyroid remnant, even in Nos. 17, 21, and 69, who had been Figure 27. Thyroid uptake study with ‘1, RongelapIsland. operated upon in June 1964 and had no thyroxine replacementbefore September 1965. The serum iodoprotein levels (PBI less 7, I) ranged from 1.5 to 2.9 and did notdiffer significantly from values in unexposed Marshallese. Figure 28. Wrist x rays showing marked retardationofskeletal maturation in dwarfed boy with hypothyrodism (right, subject No. 3, chronological age 10%2 yr) compared with younger brother with normal osseous development (left, subject No. 83, chronological age 8%2 yr). PRIVACY ACT MATERIAL REMOVED