-2~2. Small nodule at age 40 which disappeared under oral thyroid hormone therapy. ‘ 3. This patient operated on in 1969 for removal of an invasive adenoma; has recovered satisfactorily 1 ; 1 (All the above in I and II who underwent surgery appear to be in good health without evidence of recurrence.) III. Surviving adult Ailinginae people exposed to fallout. dose: . 69 rads external gamma irradiation.) (Estimated Total - 8 1. IV. Adenomatous goiter removed at age 45; recovered and was on thyroid therapy. Died of influenza in 1968. Surviving adult Utirik people exposed to fallout. (Estimated dose: 14 rads external gamma plus 15 rem internal irradiation.) Total ~ 120 1. One person developed a nodular thyroid gland and underwent surgery in 1969, As the tissue resembled a follicular adenoma in frozen section, a total thyroidectomy was performed; histologic sections confirmed the diagnosis and upgraded tthe degree of malignancy. She has recovered satisfactorily. 2, ,One person with slight enlargement of one lobe of the thyroid to be treated conservatively and observed, One case of nodular thyroid has been found in a non-exposed Rongelap woman living on Ebeye. Thyroid surgery has been recommended for this patient at Majuro Hospital, No other instances of thyroid abnormal- ities have been found in the control populations living on Utirik, Majuro or Ebeye, It appears that the exposed populations have stabilized so far as the thyroid reactions are concerned, 101388