. Roentgen interpretation; a manual for students and practitioners . T)ernephroma,myeloma, m;yTioma, fibroma, etc. The age of the patient andthe distribution of lesions may help. 72 BQNE^ PATHOLOGY Hypernephroma.—Hypernephroma occurs as multiple small areasof rarefaction with loss of trabecule and no attempt at new boneformation. It may be distributed throughout the skeleton and isparticularly common throughout the skull, sternum, ribs and bodiesof Fig. 49.—Multiple medullary-mjeloma. Fig. 50.—Pulmonary osteoarthropathy. Myeloma.—Myeloma is a low-grade malignancy of slow evolu-tion
. Roentgen interpretation; a manual for students and practitioners . T)ernephroma,myeloma, m;yTioma, fibroma, etc. The age of the patient andthe distribution of lesions may help. 72 BQNE^ PATHOLOGY Hypernephroma.—Hypernephroma occurs as multiple small areasof rarefaction with loss of trabecule and no attempt at new boneformation. It may be distributed throughout the skeleton and isparticularly common throughout the skull, sternum, ribs and bodiesof Fig. 49.—Multiple medullary-mjeloma. Fig. 50.—Pulmonary osteoarthropathy. Myeloma.—Myeloma is a low-grade malignancy of slow evolu-tion which typically causes small multiple areas of rarefaction, BONE TUMORS 73 usually limited to the flat bones, although extensive single lesionshave been obseived in long bones. Owing to its slow growth, defor-mities in outline occur as a result of thinning and expansion of thecortex overlying the growth. For the same reason spontaneousfracture is fairly common. Its appearance often resembles that ofcarcinoma, although the areas are usually smaller, more roundedand more sharply defined. It is accompanied by the presence ofBence-Jones bodies in the urine. Some cases have responded wellto roentgen therapy.
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