. Radiography and radio-therapeutics . 242.—Exostosis of the upper end of femur, attached tothe posterior surface. Differential Diagnosis of Tumours of Bone A brief summary of the commoner forms of tumour of bone and of thepoints which are most useful in diagnosis is necessary. It is also well toremember that there are no positively definite signs of any particular PLATE XLVIII.—Secondary Carcinoma of Bone. Secondary changes in bones from a case of carcinoma of the breast. a, Involvement of upper end of femur with absorption of the head and displacement of the shaft upwards. b, Left h


. Radiography and radio-therapeutics . 242.—Exostosis of the upper end of femur, attached tothe posterior surface. Differential Diagnosis of Tumours of Bone A brief summary of the commoner forms of tumour of bone and of thepoints which are most useful in diagnosis is necessary. It is also well toremember that there are no positively definite signs of any particular PLATE XLVIII.—Secondary Carcinoma of Bone. Secondary changes in bones from a case of carcinoma of the breast. a, Involvement of upper end of femur with absorption of the head and displacement of the shaft upwards. b, Left hip joint, showing fracture through the neck. c, Right knee-joint, showing advanced changes in the bones. d, Left knee-joint, shows an earlier stage where the bone is just commencing to be involved. e, Advanced changes in shaft of right femur ; absorption of portions of bone, with periosteal new boneformation. /. Left femur, showing early rarefaction of upper portion.


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