- - acute isolated m. an acute interstitial m. of unknown cause, the endocardium and pericardium being unaffected. SYN: Fiedler m..- giant cell m. acute isolated m. characterized by infiltration by granulomas containing giant cells.- toxic m. inflammation of heart muscle caused by any noxious chemical, e.g., alcohol, heavy metals.
* * *myo·car·di·tis .mī-ə-(.)kär-'dīt-əs n inflammation of the myocardium
* * *n.acute or chronic inflammation of the heart muscle. It may be seen alone or as part of pancarditis (see endomyocarditis).
* * *myo·car·di·tis (mi″o-kahr-diґtis) [myo- + carditis] inflammation of the muscular walls of the heart. myocarditic adj
Medical dictionary. 2011.