Hydatid cysts of the lung / by F. Guy Griffiths.

  • Griffiths, F. Guy.
Date:
[1912?]
Catalogue details

Licence: Public Domain Mark

Credit: Hydatid cysts of the lung / by F. Guy Griffiths. Source: Wellcome Collection.

    5/20
    HYDATID CYSTS OF THE LUNG. By F. Guy Griffiths, M.D., Sydney. Echinococcus hydatidosus is the cystic stage of taenia echinococcus. In the lung, as in other organs, it may or may not produce daughter cysts, though the absence of daughter cysts (sterile single cyst) is the more common. The daughter cysts may bud endogenously or exo- genously; in the former case (echinococcus hydatidosus) round or oval cysts result; the exogenous method of proliferation giving rise to echinococcus granulosus, is common only in ani- mals (Echinococcus veterinorum). The echinococcus alveolaris or multilocularis, due to a different parasite, the taenia echinococ- cus alveolaris of Posselt, and growing, sometimes into spherical, more often into irregular masses may occur in the lung; this variety of echinococ- cus is rarely seen except in Southern Germany, and even there seldom, except in the liver or the bones. Of al! cases of hydatids about 10 to 15 per cent. occur in the lung (West, Thomas, Mac- Laurin, A.M.G., 1907, p. 502). In the lung the cyst wall is thin and poorly supported by the surrounding tissue, This thin adventitious cyst has special relations to arteries, veins, and bronchi, the last often opening directly into it. The lung is vulnerable, and a further peculiarity results from changes lable to occur in it, 1.e., pericystic pulmonary congestion, which may sometimes give rise to haemoptysis, and even pneumonia, and to pericystic sclerosis. The hydatid cachexia (weakness, wasting, anorexia, etc.), 1s considered by some authors to appear earlier in lung than in liver cases. Degenerative changes sometimes occur, death of the parasite
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