CONTENTS B. Methods l. 2. C. 3. 6 © © © © Pathologic Evaluation Thyroid Function . © . © ee © ee we ew he . 2. 1 2 6 ew eo 1. 6 6 6. 1 6 6 6 0 ee 1 we tte he ee ee eee ee ee ew te we ee ew ee ww we tt Clinical Characteristics . 1. 6. 6 2 ee ee ee Prevalence . 6. ee et ee et ee ee Gross Findings at Surgery .. 1... ee eee Histopathology . 6. 1. 1 1 1 ee ee ee ee ee tw te 55 55 55 56 57 57 ew ew tw ee ee eee eee ee ew ee 57 57 61 6B 2, Thyroidal Hypofunction . . 2. 6. 6 2 6 6 we ew ew we we et en 3. Thyroid Abnormalities in Cases Exposed In Utero ....... 4. Problems Associated With the Thyroid Hormone Treatment Program 5. lodoprotein Studies .. ee ee ew ww ee ee ee Discussion of Thyroid Findings eae er 70 74 75 76 76 RADIOLOGICAL MONITORING OF PERSONNEL AND ENVIRONMENT A. B. C. ee Findings .. a 1. Thyroid Nodules ee ee ee ew ww ee te te tt tt (a) (b) (c) (d) D. ... Thyroid Examinations . Background . . . 6 6 1 6 Methods . . 2. 1 2 6 ew Results and Comments . . l. Rongelap and Utirik a 8 ee ee ee te ee ee ee ew te ee ee we ewe we ee ee 2. 2. 1. 2 ee ue ee ee ew te tet . 1... 6 ee ew ee ee ee we ee 2. Bikini. 2. 6 6 ee ee ee ew I. Incidence of Thyroid Disease in Comparison Populations .... A. Thyroid Findings in Comparison Populations ........ SUMMARY AND COMMENTS . 2. 2. 1. 1 A. Early Observations . 2... B. Late Observations . 2... C. Comments . . 2. 6 6 1 6 ee REFERENCES . 1. we we ew wt APPENDICES . 2 6 6 ee we ee B. C. C. D. th ee 83 85 86 86 87 89 «104 Expected Cases of Thyroid Nodules in Comparison Populations Based on Estimated Radiation Exposure Levels .... 104 Comparison of Thyroid Findings in Marshallese Comparison Populations With Those in Other Unexposed Populations .. Dose Assessment... A. Early Radiation . Source... B. we we et 1 ee ee eh et we ee ee ee es 6 0 ee ee ee ee we ee ee we 6 1 ee ew we we ee ee te ee we ew we we he tw te te we et ee ee ee he te ee tt es we ee ww ew we ww ee we ee ew) we whe II. ee tt ee 82 82 82 82 82 . . 1. 6 6 1... 6 6 ee ee ee Gamma (Whole-Body) Dose. ce ee ee ee ee ew te we we ew ew ww ww te we we ew ew ew ew ee ew we ew ew we ee we ew ew 104 104 107 ew 6 6110 e ©6110 ee) 61D ee 6CLLDT Skin Dose . 2. Internal Doses Thyroid Doses Residual Radiation 1. 6 1 ww ew ew we ee ew ee ee ee ew 6 hCLL . . 2. 1. 1 6 ee ew we ee ee ee eh ee 6D .. see ee ee ew ew we ew 6112 (Accumulated Exposure From Habitation Other Atolls . 1 on Rongelap or Utirik Atoll) . ......-.5868- 2468. . 2114 1. Early Calculations . 2... 6 2 0 1 ee ee ew ee we we ©6114 2. Reevaluation . 1... 6 1 wee ee eee eee eee we 1D Bikini Dose Estimates . . 1. 6 2 ee ee ew ee ee ew ee ©(1DY9 2. 1. ee - xili ww ee ew ew we we we we ew ww ee) «120