. The diseases of infancy and childhood. Fio. 185.—Hereditary irregularity and exagger-ation of line A. Infant twomonths old. Fig. 186.—Syphilitic Periostitis of theFibula. Infant three months patient as Figs. 187-190Right side affected; left side normal. itis. The X-ray picture shows a fusiform swelling chiefly due to peri-osteal thickening. (Fig. 1SG.) Syphilitic Dactylitis.—This is found in infants usually between thethird and seventh months. It is not a frequent manifestation of present there are usually other evidences of bone syphilis, such asperio


. The diseases of infancy and childhood. Fio. 185.—Hereditary irregularity and exagger-ation of line A. Infant twomonths old. Fig. 186.—Syphilitic Periostitis of theFibula. Infant three months patient as Figs. 187-190Right side affected; left side normal. itis. The X-ray picture shows a fusiform swelling chiefly due to peri-osteal thickening. (Fig. 1SG.) Syphilitic Dactylitis.—This is found in infants usually between thethird and seventh months. It is not a frequent manifestation of present there are usually other evidences of bone syphilis, such asperiosteal swellings, for the dactylitis is an osteoperiostitis but usuallydiffers from that affecting other bones in that the involvement of thebone, even at this early age, is considerable and the periostitis ratherslight. By means of the X-ray it can be seen that the phalanx involvedis much thickened and of denser structure than the normal. Except forthe fact that more than one and frequently several phalanges are in- 1116 THE SPECI


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