The Bradshaw Lecture on the Pathology of Cancer, Delivered at the Royal College of Surgeons of England, 1884

J.A. Churchill, 1884 - 38 páginas

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Página 20 - The elementary parts of all tissues are formed of cells in an analogous, though very diversified manner, so that it may be asserted, that there is one universal principle of development for the elementary parts of organisms, however different, and that this principle is the formation of cells.
Página 38 - Why or how it is that these continue up to a certain point, and then suddenly cease ? " If I were to attempt to add to this, it would be necessary to review the progress of...
Página 20 - ... but they seem to be solid, and all that can be remarked is that the external portion of the layer is somewhat more compact.
Página 38 - ... diseases, of their prevention or the means of checking their increase, I can only speak in the most hasty manner — partly because I could add very little to what Sir James Paget said last year and to the concluding sentence, Mr. President, of your own Bradshaw lecture in this place. You there say, " Before we shall ever be able to answer the question, Why or how do tumors form ? we must be able to solve the problem of normal growth and development, and to answer the queston, Why or how it is...
Página 8 - ... its frequent association with other forms of irregular growth ; its often rapid diffusion ; its power of infecting the system — all, in fact, that we see in the life of cancer naturally leads to a belief that the disease must from the first be more than a mere local tissue change.
Página 23 - ... years acquired of the independent actions of cells renders a solution more easy, though I admit that it is not free from difficulties. It has long been known that cells are dispersed around a cancer tumour, the direction and rapidity of the dispersion varying according to the density of the tissue, and the abundance of connective-tissue spaces or of lymphatic or vascular networks in which it lies. It is now known that the white blood-corpuscles can wander from their vessels ; more recently it...
Página 23 - ... understand that these cancer-germs may thus travel through their own power, or be carried along in the vascular systems or connective spaces in every possible direction. And it must be remembered that cancer is for the most part a structure infiltrating itself among the tissues in which it lies — not surrounded by a capsule or limitary membrane of any sort, as are so many non-infecting tumours. The newly developing and active cells ¡no always in direct contact with the healthy tissues, on...
Página 19 - ... characters of the proximate constituents has been much condensed. The varieties and properties of the vegetable cell are then discussed, and from thence the transition is easy to the animal cell. In reference to the employment of the term cell, Dr. Sharpey remarks : " The existence of animal cells destitute of envelope, although more insisted on of late years, has been all along recognised in the study of cell-development, and was expressly pointed out by Schwann himself. It has appeared to some...

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