MacCallum, William George

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William George, U.S. pathologist, 1874-1944.
MacCallum patch - found in deep layers of the endocardium in patients with rheumatic fever.
MacCallum plaque - irregular thickness usually found in the left atrium in patients with rheumatic fever.
References in periodicals archive ?
William George MacCallum, MD, Baltimore (1874-1944)
Born in Canada, William George MacCallum, MD, (Figure 5) was a member of the first medical student class to graduate from the Johns Hopkins Medical School in 1897.
William George MacCallum 1874-1944 Biographical Memoir.