Manual of pathology : including bacteriology, the technic of postmortems, and methods of pathologic research . helonne, Revue de Med., May 10. 1904. Mitth. a. d. Grenzgebiet. d. Med, u. Chir., 1904. Bd. xiii, p. 155. TlIK VOLUNTARY MUSCLES. 793 fibers. The same lesion may result from similar infections due to othercauses. In such conditions the interstitial tissue contains varying num-bers of polymorphonuclear leuk«jcytes, serum, and librin, and rlestructivelesions of the musclc-tihcrs are constantly present; the last are essen-tial! v lUH rotic. Localized or circumscribed suppurative myositis
Manual of pathology : including bacteriology, the technic of postmortems, and methods of pathologic research . helonne, Revue de Med., May 10. 1904. Mitth. a. d. Grenzgebiet. d. Med, u. Chir., 1904. Bd. xiii, p. 155. TlIK VOLUNTARY MUSCLES. 793 fibers. The same lesion may result from similar infections due to othercauses. In such conditions the interstitial tissue contains varying num-bers of polymorphonuclear leuk«jcytes, serum, and librin, and rlestructivelesions of the musclc-tihcrs are constantly present; the last are essen-tial! v lUH rotic. Localized or circumscribed suppurative myositis, ormuscle abscess, docs not ditVfr (.?sscniiall) troin oiIut aliscfsst-s, altliouj^hsometimes it extends with great rapidity. result from infec-tion primary in the tendon-sheaths or extension from jKira-articularsuppuration. Acute polymyositis, also called dermatomyositis, or, when the mucosaeare also afYected, dermato-mucoso-myositis, is probably an infection,although Steiner concludes that the cause remains undetermined. Thisobserver has been able to collect twenty-eight cases, three of which. Fig. 388.—Myositis, Acute Diftdse Suppurative. Case of Lcdwios . A. Fragmenting muscle-fiber. B. Same containing myoclasts. C. Vcssil with swollen endothelium. D. D. Pneumococci to which the process was due. occurred in the United States. Any or all the muscles may be involved;they are swollen, red or pale yellow, sometimes streaked with gray orreddish striae, and in consistency may be tinn. or soft and boggy; hemor-rhages are occasionally present. Histologically the fibers are granular,hyaline, sometimes fragmented, and occasionally fattv. Interstitialswelling and Ivmphoid accumulations occur; the spleen is soft and en-larged and bronchopneumonia is sometimes present. Subcutaneousedema and cuticular inflammatory changes are conspicuous clinicalfeatures of the affection. Stomatitis, with or without ulceration, andangina have been observed. In some cases the condition is
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