Document vVQLB6g6jONQ0gBgV9pEQVNMw

252 OCCUPATIONAL TUMORS AND ALLIED DISEASES V. SITE The localization of the roentgen- and radium-cancers reflects very definitely the organs of most intense exposure. The following table lists the distribu tion of the occupational neoplasms: SITE OF OCCUPATIONAL ROENTGEN- AND RADIUM-CANCERS Fingers Left Side Right Unknown 17 Cases 9 8 Dorsum of Hand and Wrist Arm Left Right Unknown Left Right Unknown 15 5 0 1 2 Head Trunk Lip Cheek Nose Back Chest General Breasts Abdomen 1 2 1 2 '2 2 2 1 It has been asserted by Hunter, by Cole and by others that the neoplasms of roentgenologists and their assistants are located mainly on the left hand, as this hand is exposed, especially in fluoroscopic work, while the right hand is said to be more often the site of tumors in engineers and mechanics. The following table contains the distribution of cancers of the fingers and hands in physicians and engineers: DISTRIBUTION OF CANCERS ON HANDS AND FINGERS ACCORDING TO OCCUPATIONS * . Hands and Fingers Right Left Engineers Physicians 8 12 9 20 These figures suggest that the left hand and fingers of physicians are more exposed than the right one, while in engineers and persons in similar occupations such a difference is not apparent from the evidence available. It is characteristic of cutaneous changes in roentgenologists that the neo plastic lesions and their precursors involve the tips and dorsal aspects of the