CONTENTS B. C. Methods . . 26 «© «© «© © «© © © @ 1. Thyroid Examinations... . 2. Pathologic Evaluation ... 3. Thyroid Function ...... Findings ...... +. «ees 1, Thyroid Nodules ...... (a) Clinical Characteristics (b) Prevalence ....... Wa & Wb (c) Gross Findings at Surgery (d) Histopathology ..... . Thyroidal Hypofunction... In Utero ..+..e6. . Thyroid Abnormalities in Cases Exposed In Program Thyroid Hormone Treatment . Problems Associated With the - lIodoprotein Studies .... Discussion of Thyroid Findings . D. ENVIRONMENT RADIOLOGICAL MONITORING OF PERSONNEL A. Background... .... + .-s-. B. Methods .....- 2. + « «eo C. Results and Comments ...... XI. 1. 2. > 82 82 83 85 Rongelap and Utirik .... Bikini. . 2... 2. 2s. eos SUMMARY AND COMMENTS ..... A. B. ee. Early Observations ....... Late Observations .....se-s C. Comments . REFERENCES . . APPENDICES . . I. II. . 2. 2. . «© 2. 2. «© 1. « © © 2 © «© © © «© « @ © ew eo @ wo © wb ew Incidence of Thyroid Disease in Comparison Populations A. Thyroid Findings in Comparison Populations ....... B. Expected Cases of Thyroid Nodules in Comparison Populations Based on Estimated Radiation Exposure Levels ... C. Comparison of Thyroid Findings in Marshallese Comparison Populations With Those in Other Unexposed Populations . Dose Assessment A. C. D. 5066815 . e eo ee @ . e ° «ese. ° se o- ¢ e@ » e Skin Dose ..... Internal Doses... * 28 es @e @ oe Early Radiation 1. Source... .... 2. Gamma (Whole-Body) Dose 5. Thyroid Doses 3. 4. B. ....e.-. ...... @ ... Residual Radiation (Accumulated Exposure From Habitation on Rongelap or Utirik Atoll) ...... 1. Early Calculations . 2. Reevaluation... . oe o 8 @ > ee « Bikini Dose Estimates . Other Atolls .....s - xiii 55 55 55 56 57 57 57 57 61 63 70 74 75 76 76 82 82 82 86 87 89 104 104 104 104 107 110 110 110 111 111 111 112 114 114 115 119 120