Age at exposure Rongelap exposed <10 (175 rads) Ailingnae exposed (69 rads) Est. thyroid dose® (rads) 810-1150 PO! % Subjects” with thyroid lesions No. subjects with surgery 89,5 (17/19) 15 $.3 (1/19) 25.0 (3/12) 2 8.3 (1/12) 21 6.3 (4/64) 10-188 335-810 >18 335 All 556° 37.5 (24/64) <10 275-450 33,3 (2/6) 0.0(0/1) 0 >18 135 36.4 (4/14) 3 All 217° 33.3 (6/18) 175+? 33,3 (1/3) i 69+7 0.0 (0/1) 0 10-18 In utero exposed 190 6.1 (2/33) f All Utirik exposed <10 60-95 1.7 (1/58) I 1.7 (1/58) (14 rads) 10-18 27-60 14.33/21 2 4.8 (1/21) >18 30 7.6 (6/79) 5 1.3 (1/79) All 50° 6.3 (10/158) g 1.9 (3/158) All 30-1150 16.8 (41/244) 34 2.9 (7/244) oc 26 Dose from 133) 132) 139] and plus gamma; mean dose extrapolated from calculations for adults and three-year-olds, a Based on number of people exposed, excluding those in utero (number of cases/total number in group). The thyroid is considered to be fully developed by about age 18. One additional case of adenoma, found at autopsy, not included here. &€§ tf 36.0 (31/86) 4 Rong. + Ail. Rong. + Ail. + Utirik 135-153 12.1 (4/33)4 % Subjects” with malignantlesion Weighted mean dose. Pathologists differed as to whether this lesion was malignant: it was scored as benign. 4.7 (4/86) ‘Te 39 NASUVI] Group = pacelas TABLE [. THYROID LESIONS IN MARSHALLESE, SEPTEMBER 1977