FIGURES Map of fallout area, Marshall Islands, March 1954. Sectioned thyroid gland of 12 year old exposed girl. multinodular nature of gland. oce Microscopic section of benign adenomatous noduic showing wide variation of follicle sizes with cystic changes, atrophy ané hyperplasia. (Hematoxylin-eosin X 16) Section showing invasion by metastatic papillary and follicuzar carcinoma of the thyroid into lymph node. (Case 64) (Elastic X 100) Self-explanatory. On left boy with marked growth retardation and hypocthyroidisz before thyroid hormone treatment and on right same boy 6 months after treatment started. (No. 3 in Fig. 5)