A system of surgery : theoretical and practical . urs present none of the features which were originally described as cha-racteristic of sarcoma, for they are usually highly mahgnant, and recur, not locally,but in remote parts; and they invade the lymphatic glands, often at an early periodof the disease. But in striking contrast to these very malignant osteoid tumours,which I would still call osteoid cancers, there are others which are only locallymalignant— recurrent—which do not threaten life unless by their piessure, andwhich in all clinical respects bear the strongest analogy to the i-
A system of surgery : theoretical and practical . urs present none of the features which were originally described as cha-racteristic of sarcoma, for they are usually highly mahgnant, and recur, not locally,but in remote parts; and they invade the lymphatic glands, often at an early periodof the disease. But in striking contrast to these very malignant osteoid tumours,which I would still call osteoid cancers, there are others which are only locallymalignant— recurrent—which do not threaten life unless by their piessure, andwhich in all clinical respects bear the strongest analogy to the i-ecun-ent fibroidtumours of Lebert and Paget. Such cases I would class apxrt from the canceroustumours by some such term as difiilised bony or recurrent osteoid tvimouis ; andthey will be found described in the sequel with exostoses. Fig. 55.—Melanotic Cancer infiltratinof the cancellous interior of the shafts of the lonfr a preparation (Series ii. No. 234) presented to the Museum of St, Georges Hospitalby Mr. Campbell De Morgan,.
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