Th Age at exposure Group Ron, ‘tid Lesions in Marshallese, Ma: Est. thyroid dose?, rads < 10 «p exposed 810-1150 10-18° (175 rads) > 18 Ailingnae exposed < 10 25.0 (3/12) 556& 42.2(27/64) 275-450 10-18 > 18 All In utero exposed 89.5(17/19) 335-810 335 All hs Subjects? with thyroid lesions 21.2 (7/33)4 33.3 (2/6) < 10 10-18 > 18 60-95 27-60 30 3.4 (2/58) 14.3 (3/21) 7.6 (6/79) All 30-1150 Utirik unexposed 50° < 10 0 (4/86) 7.0 (11/158) 1 2 5 8 1.7 4.8 1.3 (1/58) (1/21) (1/79) 18.4 (45/244) 34 2.9 (7/244) 2 2 4 0.8 0.5 (1/122) (1/209) 4.4 (4/90) 3 1.1 (1/90) 0.0 (0/43) 0 0 0 3 3.4 (5/149) 0 < 10 4.9 (4/82) 1 < 10 3.1 (9/287) 4 6.3 (1/16) 5.0 (3/60) 5.1 (8/158) 10-18 > 18 All 7.8 (5/64) 5.9 (18/303) 4.9 (32/654) 1.9 (3/158) 6 0.0 (0/17) 5.6 (5/89) 10-18 > 18 All (2/33) 1£ 10-18 > 18 All “Dose from 131, (4/64) 6.1 4.7 12.5 (2/16) 9.4 (3/32) 6.5 (9/138) < 10 All unexposed 6.3 d 26 13.3 (2/15) 5.7 (7/122) 4.3 (9/209) < 10 Wotje unexposed 39.5 (34/86) 0.0 (0/72) 10-18 > 18 All 10-18 > 18 All Likiep unexposed 21 1 Utirik exposed (14 rads) Rongelap unexposed (1/12) 33.3 (1/3) 135-1150 (1/19) 8.3 175+? All 5.3 2 0 3 4 0.0 (0/1) i Subjects? W: malignant le: 15 0.0 (0/1) 36.4 (4/11) 33.3 (6/18) Rong. + Ail. Rong. + Ail. + Utirik No. subjects with surgery 190 135 217¢ 69+? Ali 1978 0 0 0 0 1 2 2 8 ‘ 0.3 (1/287) 0.3 (17303) 0.3 (2/654) L33y and 1357 plus gamma; mean dose extrapolated from calculations adults and 3-year olds. , OBn 132y, " on number of people exposed, excluding those in utero (number of cases/total number in g “The thyroid is considered to be fully developed by about age 18. ee? cr Cone additional case of adenoma, found at autopsy, not included here. “Weighted mean dose. ‘Pathologists differed as to whether this lesion was malignant; it was scored as benign. U ry t' es i bo £o1