RG COMMISSI Cellection AC. SEA Boke Box 408516 ERERGY ze u.SATOMICON CQry ©9 October 2, 1964 Folder O+*\2-Dy, of Biotooy + Mspic weE~dan_Dec, 1165" MEMORANDUM FOR CHAIRMAN SEABORG THROUGH GENERAL MANAGER SUBJECT: THYROID DISEASE IN RONGELAP ISLANDERS During the February 1964 annual medical survey of the Marshallese Islanders exposed to fallout from the March 1, 1954, shot over Bikini, three young teenagers, 13-14 years ald, were found to have nodules in their thyroid glands. The medical team felt that two of them should have immediate thyroidectomies, and these operations were successfully carried out at the Naval Hespital on Guam with the full cooperation of the Trust Territory peeple and the medical services of the Department of Defense. The pathological diagnoses were papillary adenocarcinoma, a mslignant tumer of the thyroid. The prognosis, of course, is uncertain, but the surgeons are reported to have felt that they may have removed all the neoplastic tissue. While this information has not been transmitted formally, it is regarded as reliable. It is planned that a ten year summary of the health status ef the exposed Marshallese, including these recent developments, will be prepared for prompt publication in a prominent journal such as the Journal of the American Madical Association. Preparations are now going ahead to have the third child with a small nodule operated on as soon as possible. The estisated doses to these thyroids sre some 100 te 175 rads external gamma plus 100 to 150 rads from absorbed radiotodine. BEST COPY AVAILABLE EQEY

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