Table 13 (continued) Thyroid Abnormalitites in Exposed Rongelap People, 1969 (Arrangedin order of appearance of abnormality ) Subject No. and sex Time of development Present age, yr Age at exposure Year Age Findings, present status (1969) 33 F 16 1 1966 13. 9/65 questionable irregular gland. 3/66 definite 5-mm noduleleft lobe. 7/66 subtotal thyroidectomy: adenomatousgoiter, Hiurthle cell adenoma. No recurrence. Euthyroid on thyroxine. 65 F 16 1 1966 13 9/65 questionable small nodule. 3/66 5-mm nodule right lobe. 7/66 23 M 19 4 1967 {7 1.5 to 2-cm nodule right lobe. 1968 slight increase in size of nodule. Subtotal thyroidectomy 1968. No recurrence. Euthyroid on thyroxine. 15 F 22 7 1968 21 Slight nodularity both lobes. 1968-1969 nodularity increase. Subtotai 18 F 36 21 1969 36 Knaried mass right lobe. Complete thyroidectomy. Follicular carcinoma of right lobe. Adenomatous nodules were also present in remain- right subtotal thyroidectomy: adenomatous goiter. No recurrence. _ Euthyroid on thyroxine. thyroidectomy 1969. Benign adenomatous nodules. der of gland. ‘ * Ailingnae group; received 70 rads gammaradiation. This patientdied of influenza-pneumonia in 1968. Another 77year-old womanin the Ailingnae group (#43) died in 1964 of pneumonia, and, though no chemical evidence of thyroid adenomatawasnoted prior to death, histological examination of her thyroid revealed adenomatous changes. A 29year-old female (#70) from this group had a neurofibroma removed from theleft side of the neck, near the thyroid,in 1968. Table 14 Thyroid Nodules (Plus Hypothyroidism), March 1969 Group Rongelap (175 rads y) Ailingnae (69 rads y) Utink (14 rads y) Rongelap unexposed Estimated Age at exposure thyroid dose,* rads Percent thyroid lesions> Percent malignancy? <10 500-1400 89.5 (17/19) 3.3 (1/19) <10 >10 all 275-550 55 ~ 0.0 (0/6) 12.5 (1/8) 7.1 (1/14) <10 55-110 >10 all >10 all <10 _>10 all @Dose from 341, 182, 183, 135], 160¢ - 8.8 (3/34) 39.6 (21/53) , 14 - ~ - >Based on present population. eChildren 10 to 20 years of age at exposure received up to about 500 rads. 0.0 (/40) 5.1 (3/59) 3.0 (3/99) 0.0 (0/61) 2.3 (3/133) 1.5 (3/194) 5.9 (2/34) 5.7 (3/53) ~ - 1.7 (1/59) 1.0 (1/99) ~ -