Bull's-eye cutaneous infarct of zygomycosis: a bedside diagnosis confirmed by touch preparation.

We report an immunocompromised woman with chronic lymphocytic leukemia who developed cutaneous zygomycosis at the site of an arterial line. The initial lesion resembled a bulls-eye. Bull's-eye lesions of zygomycosis have been reported twice before. Recognition of this sign may allow the dermatologist to make a rapid presumptive diagnosis and initiate treatment for this life-threatening infection.