Images in Clinical Medicine

Kim Eagle, M.D., Editor

Tripolar Mitotic Figure

Robert E. Mrak, M.D., Ph.D.

N Engl J Med 1995; 332:718March 16, 1995

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Article

Figure 1 Dysfunctional tripolar mitotic figures usually indicate neoplasia. The cell shown here, however, represents an abnormal but nonneoplastic astrocyte, presumably infected with papovirus, in a patient with progressive multifocal leukoencephalopathy. (Hematoxylin and eosin, ×1500.)

Kim Eagle, M.D.

Robert E. Mrak, M.D., Ph.D.
Veterans Affairs Medical Center, Little Rock, AR 72205