Diseases of cattle, sheep, goats Diseases of cattle, sheep, goats and swine diseasesofcattle00mous Year: 1920 TUBERCULOSIS. 689 Even when the hings are unaffected it may happen that the lym- phatic glands of the mediastinum (superior or inferior oesophageal lymphatic glands) and the hronchial lymphatic glands may be so diseased that the oesophagus is completely surrounded and compressed by them, and its function thus seriously impaired (Fig. 276). In the abdomen the mesenteric glands are most exposed to disease, and when infected through the intestinal tract they assume the form of large fla
Image details
Contributor:
Bookend / Alamy Stock PhotoImage ID:
T1JK12File size:
5.7 MB (247.7 KB Compressed download)Releases:
Model - no | Property - noDo I need a release?Dimensions:
2518 x 794 px | 21.3 x 6.7 cm | 8.4 x 2.6 inches | 300dpiMore information:
This image is a public domain image, which means either that copyright has expired in the image or the copyright holder has waived their copyright. Alamy charges you a fee for access to the high resolution copy of the image.
This image could have imperfections as it’s either historical or reportage.
Diseases of cattle, sheep, goats Diseases of cattle, sheep, goats and swine diseasesofcattle00mous Year: 1920 TUBERCULOSIS. 689 Even when the hings are unaffected it may happen that the lym- phatic glands of the mediastinum (superior or inferior oesophageal lymphatic glands) and the hronchial lymphatic glands may be so diseased that the oesophagus is completely surrounded and compressed by them, and its function thus seriously impaired (Fig. 276). In the abdomen the mesenteric glands are most exposed to disease, and when infected through the intestinal tract they assume the form of large flattened masses arranged along the mesentery. In the digestive tract, as in the trachea and bronchi, tuberculosis has a marked tendency to assume the ulcerative form. Disseminated or aggregated tubercles develop in the thickness of the mucous mem- brane, and, after rapidly softening, become ulcerated. The nature of Fig. 276.—Tuberculosis of lymphatics. PG, Left lung ; PD, right lung ; TT, tuberculous oesophageal lymph glands; A, aorta; ffi, oesophagus (the lung is divided transversely near its centre). these lesions can only be determined by noting their character and examining the discharge. The ulcerations are localised in the mouth and pharynx, in the second half of the small intestine towards the ileum, and in Peyer's patches. Tuberculous lesions develop in the vaginal sheath of the male genital organs exactly in the same way as in an ordinary closed serous cavity; tubercles may also develop on the surface or in the substance of the testicle. They become aggregated, undergo softening, spread towards the interior, and may break down, thus forming abscesses. In the female genital passages the disease invades the thickness of the walls, but shows a marked tendency to ulceration, as in the intestine or trachea. In the udder tuberculosis is generally diffuse, shows a tendency to hypertrophy and the free formation of fibrous or sclerous tissue; only tubercles in the glandular