The pathological significance of nematode haematozoa / by T.R. Lewis.

  • Lewis, T. R. (Timothy Richards), 1841-1886.
Date:
1874
Catalogue details

Licence: Public Domain Mark

Credit: The pathological significance of nematode haematozoa / by T.R. Lewis. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    of the oesophagus. Notwithstanding the somewhat extended reference to the works of systematic writers on these and allied subjects, which, through the courtesy of Mr. Wood-Mason, Curator of the Indian Museum, I have been able to make, I can find no mention of their lodging themselves in the walls of the blood vessels. (2).—As far as the aorta is concerned, the condition Nature of the smaller referred to under the second heading tumours referred to . ., p „ under heading 2. is the one ot most frequent occur- rence ; and as in this condition the parasite may be obtained in various stages of advancement, it will be better to describe the smaller tumours and their contents before referring more minutely to the mature Filaria, especially as this will give an opportunity of studying the growth of the parasite from a very early period till it reaches maturity. Specimens in almost every stage of development may sometimes be found lodged in the walls of a single aorta. Although the tumours enveloping the young are much smaller than those in which the mature worms are usually lodged, the lesions, as far as the tissues of the walls of the artery are concerned, appear to be of a more serious nature, for frequently the walls of the vessel are very fragile at various places and there is a considerable roughening of its inner wall. Towards the earlier stages of the attack of this parasite, a cursory examination of either the inner or the outer surface of the aorta may not convey to the observer the impression that there is anything unusual