June 1978

Mitral Annular Calcification

Author Affiliations

Columbus, Ohio

Arch Intern Med. 1978;138(6):1022-1023. doi:10.1001/archinte.1978.03630310096035

To the Editor.—  Recently, three reports on the clinical manifestations of mitral annular calcification (MAC) have appeared in the medical literature.1-3 Of the total 119 patients who were described, only 36 (30%, 36/119) had fluoroscopic evaluation for MAC, and seven of these cases were found with negative findings for annular calcium! To my knowledge the authors' contention that echocardiography is more sensitive than fluoroscopy for the diagnosis of cardiac calcium is untested and unfounded. D'Cruz and associates'2 cited references offer no support for this assumption. In the September issue of the Archives, Schott et al3 have been misled by misquoting the work of Joyner and colleagues.4 They have substituted the word "calcified" for the original "fibrous" description of the rheumatic valve and thus, Schott et al3 have altered the meaning of Joyner and associates'4 abstract.While cardiac motion and superimposed bony structures may limit

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