Identifier: americanquarterl02amer (find matches)
Title: American quarterly of roentgenology
Year: 1909 (1900s)
Authors: American Roentgen Ray Society
Subjects: Nuclear Medicine Radiography Radiology Radiology
Publisher: Pittsburgh : American Roentgen Ray Society
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and the National Endowment for the Humanities

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involvement ofsoft tissue. In addition bone-cysts are often multiple, sar-comata are not. 4. Osteo-myelitis is also intra-osseous with destruction ofbone and if abscesses supervene, the surrounding tissues showdarkened areas due to ostitis. Characteristic cavities .andsequestra of bone are also to be found in chronic cases. 5. Syphilitic gumma presents a dark, almost black shadowand produces a spindle-like protrusion of the periosteum withirregular nodules. A large area of bone may be involved.The periosteum looks moth-eaten or net-like in some places.In sarcoma the bulging out of the periosteum is more localizedand not spindle-shaped or fusiform—it does not affect aslarge an area of bone as syphilis and rapidly extends into softtissues, while syphilis is confined to bone. 6. Tuberculosis of bone shows an indefinite, very paleshadow of bone with atrophy of same and no invasion of softtissues. The joint affected may be much swollen but thebone itself does not partake of this process.
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Fig. 12—Osteosarcoma. Enostosis of head of humerus. Diefenbach : X-Ray Diagnosis L75 SYPHILIS. The Roentgen-ray has been of great service in the diagnosisof syphilitic bone lesion. Congenital syphilis, lues hereditarialata and gumma show characteristic shadows upon theRoentgenogram. In congenital syphilis there is periosteal enlargement aboutthe metacarpal bones or phalanges or the metatarsal or tarsalbones may be affected similarly. The periosteal shadowappears like a cloak hung about bone and this dark envelopeis characteristic of congenital syphilis. Syphilis does notproduce atrophy of bone such as is found in tuberculosis—itproduces an increase in shadow density, while tuberculosiscauses a diminution of the shadow density and does notinvolve the periosteum. When we appreciate that thespirocheta pallida may enter the body in numerous ways asidefrom sexual contact, such as from smoking, drinking frominfected cups, kissing, handling of coin which has been incontact with a mucous

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