Modern surgery, general and operative . no connective-tissuestroma and no lymphatics. In a sarcoma without a definite stroma the blood-vessels are not surrounded by lymph-spaces and are quickly invaded by cells(B. H. Buxton). The rapidly growing forms are very vascular, the bloodflowing in vessels whose walls are very thin or running in canals lined by endo-thelium and bounded by sarcomatous cells. Such a tumor may pulsate andhave a bruit, and hemorrhage often takes place into its substance. A rapidlygrowing soft sarcoma with dusky skin above it (Fig. 190) may be mistaken foran abscess. A slow
Modern surgery, general and operative . no connective-tissuestroma and no lymphatics. In a sarcoma without a definite stroma the blood-vessels are not surrounded by lymph-spaces and are quickly invaded by cells(B. H. Buxton). The rapidly growing forms are very vascular, the bloodflowing in vessels whose walls are very thin or running in canals lined by endo-thelium and bounded by sarcomatous cells. Such a tumor may pulsate andhave a bruit, and hemorrhage often takes place into its substance. A rapidlygrowing soft sarcoma with dusky skin above it (Fig. 190) may be mistaken foran abscess. A slowly-growing sarcoma has but few vessels. Sarcoma tendsstrongly to infiltrate adjacent parts. The growth disseminates by means ofthe blood and the vessel walls, particles of the tumor being carried by thevenous blood to the heart, and from this organ to the lungs, where they lodge —^ and form secondary growths. Embolifrom these secondary foci are sent out! by the arterial blood to various por-tions of the bodv, as the bones, kidneys, r. Fig. 191.—Small round-celled sarcomaof neck. Skin has given way and a bleed-ing mass is exposed.
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