The diseases of the mammary gland of the domestic animals / by P. Leblanc ... Authorised translation by Lieutenant-Colonel J.A. Nunn.

  • Leblanc, P. (Paul), 1872-
Date:
1904
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Licence: In copyright

Credit: The diseases of the mammary gland of the domestic animals / by P. Leblanc ... Authorised translation by Lieutenant-Colonel J.A. Nunn. Source: Wellcome Collection.

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    later stages, although at first it is not noticed ; on the other hand, sporadic mastitis lias little influence on it. In spite of these drawbacks, hovvever, Hess’s classification appears to be more scientific than any of the others, for in such a matter it is easier to criticise than construct, and an idéal classifica- tion lias yet to be made. Classifications based solely on etiology or pathological anatomy are false, and in propounding an idéal one every clinical symptom should be taken into considération. At the onset ail cases of mastitis are catarrhal, but in a short time almost invariably run on into parenchymatous. The line of démarcation between the two is entirely artificial, and although no doubt there are cases of purely catarrhal mastitis, they are exceed- ingly rare. On the other hand, there are great and well-marked différences between benign catarrh of the sinus and parenchy- matous mastitis. The term parenchymatous mastitis is not a happy one, though, being in common use, we are compelled to adopt it, but consider it to mean mastitis in which the entire gland, con- nective tissue, lacteal ducts, and acini are ail involved in a greater or lesser degree. Mastitis is by some authorities divided into acute and chronic. The acute form may be either catarrhal or parenchymatous. In some cases only the sinuses and canals are affected, and not the gland tissue ; in others the whole organ is involved in the inflam- matory process, with radical changes in its éléments. The following classification is therefore proposed :— i Catarrh of the sinuses and galactopherous canals. Acute mastitis ] Parenchymatous, involving the whole structure of the ( glands. i Catarrhal or contagious mastitis of Nocard and Mollereau. Chronic mastitis ] Parenchymatous, i.e. mastitis in the bitch, tuberculous mas- ( titis and induration of the udder in the cow. There is also the phlegmonous mastitis of Saint Cyr and Violet, but the abscess may be consideied as an accidentai complication. Ail species of female domesticated animais are subject, but usually it is the cow that is attacked. This can be readily under- stood when the size of the mammæ and their constant State of activity are remembered. The other species are the ewe, goat, bitch, and rarest of ail the mare and sow.
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