Diagnostic criteria for classic ulcerative pyoderma gangrenosum

In addition to a biopsy demonstrating a neutrophilic infiltrate, patients must have at least four minor criteria to meet diagnostic criteria.

* Including histologically indicated stains and tissue cultures.
¶ Ulcer should extend past area of trauma.

Reproduced with permission from: Maverakis E, Ma C, Shinkai K, et al. Diagnostic Criteria of Ulcerative Pyoderma Gangrenosum: A Delphi Consensus of International Experts. JAMA Dermatol 2018. Copyright © 2018 American Medical Association. All rights reserved.

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Diagnostic criteria for classic ulcerative pyoderma gangrenosum