. General surgical pathology and therapeutics, in fifty-one lectures .. . Pedunculated spongy exostosis from the lower end of the femur, after Peart. intimately connected with the spongy substance of the epiphyses, sothat the hard tumor is immovably seated on the bone. From the na-ture of these exostoses they can only occur in young persons. Ac-cording to my observation, tibia, fibula, and humerus, are their mostfrequent seat. (b.) Ivory exostoses. These consist of compact bony substance,with Haversian canals and lamellar systems; they develop on thebones of the face and skull (Figs. 125 and 1
. General surgical pathology and therapeutics, in fifty-one lectures .. . Pedunculated spongy exostosis from the lower end of the femur, after Peart. intimately connected with the spongy substance of the epiphyses, sothat the hard tumor is immovably seated on the bone. From the na-ture of these exostoses they can only occur in young persons. Ac-cording to my observation, tibia, fibula, and humerus, are their mostfrequent seat. (b.) Ivory exostoses. These consist of compact bony substance,with Haversian canals and lamellar systems; they develop on thebones of the face and skull (Figs. 125 and 126), on the pelvis, scapula,grert toe, etc., and form roundish, nodulated, or smooth tumors. 63-1 TU3I0ES. A third variety of tumor-like formation of bone is the abnormalossification of tendons, fasciae, and muscle, which usually occurs on a Fig. Ivory exostosis of tbe skull. series of tendons and fasciae after they have previously ossified a greatdeal, so that the skeleton of such patients, who are generally young, Fig. 126.
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