TABLE 1
Thyroid Lesions in Marshallese, April 1976
Group
Rongelap exposed
(175 rads)
Age at
exposure
< 10
10-18°
> 18
All
Ailingnae exposed
(69 rads)
< 10
10-18
> 18
All
In utero exposed
Utirik exposed
(14 rads)
< 10
10-18
> 18
All
Est. thyroid
dose, rads
% Subjects? with!
thyroid lesions]
810-1150
89.5 (17/19)
335-810
335
556%
25.0 (3/12)
9.1 (3/33)%
35.9 (23/64)
275-450
190
135
217¢
33.3
0,0
36.3
33.3
175+?
69+?
33.3 (1/3)
0.0 (0/1)
60-95.
27-60
27
50¢
No. subjects|
with surgery{|
(2/6)
(0/1)
(4/11)
(6/18)
15
5.3 (1/19)
1
3
6.1 (2/33)
19
1
0
3
4
% Subjects” with
malignant lesions
4.7 (3/64)
€
1
0
1.7
9.5
9.0
6.4
(1/58)
(2/21)
(7/78)
(10/157)
1
1
3
4
0.0
15.4
7.4
5.3
(0/72)
(2/15)
(9/122)
(11/209)
0
1
2
3
Rongelap unexposed
< 10
10-18
> 18
All
Likiep unexposed
< 10
> 10
All
0.0 (0/31)
4.7 (5/106)
3.6 (5/137)
Wotje unexposed
< 10
> 10
All
3.4 (3/88)
5.7 (4/70)
4.4 (7/158)
0
0
All unexposed
< 10
> 10
All
1.6 (3/191)
6.4 (20/313)
4.6 (23/504)
0
0
0
1.7 (1/58)
4.8 (1 21)
1.3 (2/157)
0
0
0
0
* Dose from Bt 1327 133, | and 135, plus gamma; mean dose extrapolated from calculations”°
for adults and 3-year olds (see Sect’on IT).
b 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.
d
One additional case of adenoma, found at autopsy, not included here.
© Weighted mean do se.
f Pathologists differed as to whether this lesion was malignant; it was scored as benign.
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