Manual of pathological anatomy . ^; and Dr. Hodgkin*also reports a case of thickening and bony deposit in the pulmonaryartery close to the valves. * Catalogue of Guy*s Hospital Museum,* No. 14C3. DISEASES OF THE VALVES OF THE HEART. 359 Fig. 87. Comhined Lesions.—The lesions of the valves hitherto spoken ofmay be variously complicated with one another, or with hetero-logous growths. Pathological re-cords contain instances of a greatvariety of changes of form, theresult of morbid processes or acci-dent. Thus the individual flap ofthe semilunar valve may be re-verted or inverted, the valves ofth
Manual of pathological anatomy . ^; and Dr. Hodgkin*also reports a case of thickening and bony deposit in the pulmonaryartery close to the valves. * Catalogue of Guy*s Hospital Museum,* No. 14C3. DISEASES OF THE VALVES OF THE HEART. 359 Fig. 87. Comhined Lesions.—The lesions of the valves hitherto spoken ofmay be variously complicated with one another, or with hetero-logous growths. Pathological re-cords contain instances of a greatvariety of changes of form, theresult of morbid processes or acci-dent. Thus the individual flap ofthe semilunar valve may be re-verted or inverted, the valves ofthe aorta may become their bases, and thus lose thefulcrum by which they resist theimpetus of the blood; or the ten-dinous cords of the mitral mayinduce a deficiency of the valve by a shortening and thickening, a. Aortic valves of a child ag-ed fouryears; they are opaque and thickened,and their free margin curled backwardtoward the artery. Two of the valves areclosely united by their adjacent margins. (St. Bartholomews Museum. 11thSeries, 52.) lesion which Hope considers asconstituting one of the worst va-rieties of diseases of the valves. Aneurism of the Valves.—A con-dition of the valves remains to bepointed out, which was first de-monstrated by Dr. Thurnam; * itconsists in a saccular dilatation, which he attributes to a gradualdistension, and hence terms aneurism of tl^ie valves. It is met with in the aortic and tricuspid,Fig. 88. but most commonly in the mitral, valves. Dr. Peacockf has alsorecorded a similar affection of thevalve of the foramen ovale. Wefind that the dilatation may existwithout any lesion of continuityin the tissue; the endocardiallining being traceable throughoutthe pouch. This in the case ofthe mitral valve projects into theleft auricle, and is often filledwith a clot
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