. Radiography, x-ray therapeutics and radium therapy . Pig. 147.—Sarcoma of lower end of femur. The bone has been sawu longitudinally in order to show thetumour in its interior. The appearance of this tumour inthe amputated limb and in the living subject are shown inPlate XXX., Figs, c, e, and/.. PLATE XXX.—Tumours of Bone. a, Periosteal sarcoma of shaft of humerus. Plate XXXII fig. a, shows recurrence in lung two years afteramputation of arm. h, Myeloid sarcoma of shaft of humerus confirmed by microscopic examination. Therehave been several fractures at the seat of growth. c, Sarcomaof lower
. Radiography, x-ray therapeutics and radium therapy . Pig. 147.—Sarcoma of lower end of femur. The bone has been sawu longitudinally in order to show thetumour in its interior. The appearance of this tumour inthe amputated limb and in the living subject are shown inPlate XXX., Figs, c, e, and/.. PLATE XXX.—Tumours of Bone. a, Periosteal sarcoma of shaft of humerus. Plate XXXII fig. a, shows recurrence in lung two years afteramputation of arm. h, Myeloid sarcoma of shaft of humerus confirmed by microscopic examination. Therehave been several fractures at the seat of growth. c, Sarcomaof lower end of femur (after removal), d, Sarcoma of head of fibula. (Eadiograph by Dr. Reid.) e, Lateral view of c, from living subject. ^, Antero-posterior view of c. TUMOURS OF BONE 183 with later, but, in passing,-it may be observed that a knowledge of themacroscopic and microscopic appearances of tumours will aid the radio-grapher to grasp points in the progress of a case, which will often help todecide his opinion in a particular instance. Sarcoma is the most important primary tumour of bone, and almostany form of this may occur. Endosteal, or central, sarcoma generally com-mences in the medullary cavity or cancellous tissue, and results in the so-called expansion of bone, which consists o
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