The pathology and surgical treatment of tumors . with the degeneration; b, the clear myxomatous part; c, a vein ;d, an artery in the midst of the mucoid. coma the cells become macerated in the sero-mucin—several delicateprocesses which form a network in the meshes of which the myxoma-tous material is deposited—and the tissues assume the appearance ofwhat was formerly called net-cell sarcoma. With the myxomatousdegeneration the tumor becomes softer, and a sense of fluctuation is felton palpation if the degeneration has become extensive. Caseation has been observed in sarcoma as another form of
The pathology and surgical treatment of tumors . with the degeneration; b, the clear myxomatous part; c, a vein ;d, an artery in the midst of the mucoid. coma the cells become macerated in the sero-mucin—several delicateprocesses which form a network in the meshes of which the myxoma-tous material is deposited—and the tissues assume the appearance ofwhat was formerly called net-cell sarcoma. With the myxomatousdegeneration the tumor becomes softer, and a sense of fluctuation is felton palpation if the degeneration has become extensive. Caseation has been observed in sarcoma as another form of regres-sive metamorphosis. It begins in different parts of the tumor at thesame time, and by the coalescence of different foci large cavities filledwith cheesy material are formed. It is questionable if such a regres- SARCOMA. 553 sive metamorphosis is possible without infection of the tumor withtubercle bacilli. The structure of the vessels in the tumor is such thatlocalization of floating microbes easily occurs, and it is more than prob-. FiG. 401.—Portion of the edge of the myxomatous space shown in Figure 400; X 450 (after D. ): a, the edge of the tumor; b, the branching cells lying in the clear mucoid. able that future investigations will show that caseation in sarcomafollows in consequence of infection with tubercle bacilli. Ulceration and sloughing take place as soon as the tumor, byinvasion and pressure, reaches a free surface. The sloughing is oftenvery extensive, attended by a foul-smelling discharge caused by infec-tion with putrefactive microbes. Sloughing of the skin relieves thetension, and the tumor-tissue projects beyond the surface defect in theform of fungous masses, furnishing a good representation of what wascalled by the old authors the fungus hcematodes. Infection of thetumor may occur without ulceration by localization of floating pus-microbes in the defective capillary vessels by mural the occurrence of this complicatio
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectneoplas, bookyear1895
