American practice of surgery : a complete system of the science and art of surgery . clusion dermoids; epi-thelioma; neuroma; glioma. II. Tumors of Mesoblastic Origin. (a) Mesothelial.—Adenoma and cystadenoma; carcinoma; rhabdomyoma;hypernephroma. (6) Mesenchymatous.—Fibroma, myxoma, lipoma, chondroma, osteoma, leio-myoma, angioma, myeloma, endothelioma (perithelioma) of blood-vessels and lymphatics; sarcomata of all kinds. III. Tumors of Hypoblastic , adenoma, chordoma (?), carcinoma. 300 PRACTICE OF SURGERY. The accompanying figure (Fig. 84), taken from Adamis paper
American practice of surgery : a complete system of the science and art of surgery . clusion dermoids; epi-thelioma; neuroma; glioma. II. Tumors of Mesoblastic Origin. (a) Mesothelial.—Adenoma and cystadenoma; carcinoma; rhabdomyoma;hypernephroma. (6) Mesenchymatous.—Fibroma, myxoma, lipoma, chondroma, osteoma, leio-myoma, angioma, myeloma, endothelioma (perithelioma) of blood-vessels and lymphatics; sarcomata of all kinds. III. Tumors of Hypoblastic , adenoma, chordoma (?), carcinoma. 300 PRACTICE OF SURGERY. The accompanying figure (Fig. 84), taken from Adamis paper above referredto, illustrates in a graphic way the differentiation of the various embryonal tis-sues, at the same time indicating their function and relative position. We pass on now to the consideration of the special varieties of tumors. In-asnuich as this is a work for practical surgeons, I have not ventured to adoptAdamis classification, though I believe it to be the most scientific that has hith-erto been devisetl. It involves, however, the use of a new terminology, and. Fig. 84.—Scheme of Tissue Relationships. (Adami.) Lepidic tissiifs : 1, Epiblast (ectoderm and glands); 2, hjpoblast (entoderm and glands) ; 2, noto-chord (hypoblast); 3, mesothelium (lining body-cavity), with derived glands; 4, endothelium(lining ). Hylic tissues: 5, Epiblastic (forming nervous tissues): 6, mesothelial (forming striated muscles);7, mesenchyme; 8, pleuro-peritoneal cavity; 9, lumen of alimentary canal. until this becomes generally understood any other course would be liable tocreate confusion. Nevertheless, in view of the importance of the subject, I haveintroduced as alternative designations the terms employed in this latest attemptat the classification of new growths on embryological principles. By a refer-ence to the schemata given above, the subject will be made sufficiently plain. TUMORS AND TUMOR FORMATION. 301 I. TUMORS OF NOX-EPITHELIAL TYPE. These may be benign or m
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