10 T ie 1 T T Te| a 4 o lab e re bc) Tt ® FE * oF w Mm WI + 7 @& - s # oioe a wl ~ ty _ ab 3 eL a e e aL mam * 2 4 @ CONTROL 4 & |RRADIATED & _ & l 6 l 8 10 l 4 12 14 16 L 18 NORTH MARSHALL RADIATED AMERICAN CONTROLS CONTROLS CHRONOLOGICAL AGE (YEARS) Figure 4. Skeletal maturation. Figure 5. Deviation from normal bone age values, 4 to 9 years old. | | | 1 j Sr ~a4 Ww = a ° a * ae 2 = woak Table 5 a eo 4e ee ae 4 a pv ul ry) x “ a 3 @ CONTROL & RADIATED treo ° ° ! | l 2 L 3 l 4 Percent Incidence of Eye Disorders i 4 Eye disorder Exposed Unexposed Rongelap Utirik Rongelap Pinguecula _ l 5 CHRONOLOGIC AGE (YEARS) Figure 6. Skeletal maturation. and hands showedslight improvementoverlast year. Residual changesin the skin from the previous beta burns were present in 13 Rongelap people and in one Ailingnae individual, mostly on the back of the neck, the antecubital fossae, and the dorsum of the feet. These changes were not severe and consisted grossly of alterations in pigmentation in areas showingslight atrophy andscarring of the skin. In some cases pigment was increased and in others pigmentation had not completely returned. In other instances both pigmentation and lack of it were present in the samelesion, giv- ing a blotchy and uneven color. In only a few Pterygium Corneal pigmentation Cataracts Vitreousfloaters Retinopathy,arteriosclerotic Arcussenilis 9.4 20.9 3.1 15.7 7.1 2.1 12.5 4.5 9.9 0 11.7 0.1 0 7.8 4.8 77 0 5.8 2.9 1.0 0 cases (several lesions on the dorsum ofthe feet and one ear lesion) was there sufficient scarringto result in adhesionsofthe skin to subcutaneoustissues. Biopsies were taken from four lesions and from similar areas in unirradiated individuals for comparison. Microscopically no changes were noted suggestive of neoplastic changes. Some lesions showed thickening of the corium by bands of collagen fibers, but this was no more extensive than that observed in biopsies a year ago. Laboratory Examinations Hematological. As in previous reports, the blood data have been classified according to age and