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August 1971

Black Grain Mycetoma: A Case Due to Madurella grisea

Author Affiliations


From Veterans Administration Hospital; Department of Pathology, Emory University School of Medicine; and Center for Disease Control, Health Services and Mental Health Administration, Public Health Service, Atlanta.

Arch Dermatol. 1971;104(2):197-201. doi:10.1001/archderm.1971.04000200085015

A 46-year-old truck driver developed a mycetoma of the left foot after a nail puncture. Soft black granules, 0.5 to 2 mm in diameter, were present in the exudate from draining sinuses as well a in histological sections. Cultural studies led to the identification of the etiologic agent as Madurella grisea. Administration of amphotericin B intravenously failed to control the disease. The mycetoma was ultimately opened, and the superficial sinus tracts were cored out surgically.

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