Manual of pathological anatomy . spoken of further on. Thesechanges may afiect either the fibroid tissue resulting from acuteendocarditis (as in rheumatism) or that produced by the morechronic changes which are sometimes called chronic inflammation ;and hence it is difficult or impossible to say, from their appearancealone, whether the morbid changes of valves are due to an acuteor to a chronic disease. Opacity of the valves usually results from the chronic changesjust described; and it often happens, as in atheroma of arteries,that the new growth is calcified. Some degree of opacity is veryco
Manual of pathological anatomy . spoken of further on. Thesechanges may afiect either the fibroid tissue resulting from acuteendocarditis (as in rheumatism) or that produced by the morechronic changes which are sometimes called chronic inflammation ;and hence it is difficult or impossible to say, from their appearancealone, whether the morbid changes of valves are due to an acuteor to a chronic disease. Opacity of the valves usually results from the chronic changesjust described; and it often happens, as in atheroma of arteries,that the new growth is calcified. Some degree of opacity is verycommon, especially in the anterior flap of the mitral, where ayellow opaque patch is the rule in persons beyond middle life. Itis not impossible that this is produced by friction, as this flapappears often to touch the ventricular septum.* Atrophy of Valves.—We have already alluded to perforation ofthe valves, as a result of endocarditis. Another form in whichthe same lesion occurs is in connection with atrophy. This is Fig.
Size: 1345px × 1858px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectanatomy, booksubjectp
