Ecthyma Gangrenosum

Ecthyma Gangrenosum

Cary Chisholm, MD

This is ecthyma gangrenosum over the toe of a patient with pseudomonas sepsis. Black gangrenous changes image are seen on a red indurated base image.

This vessel is occluded by a thrombus image. Necrosis of the surrounding tissue has begun and neutrophils are infiltrating to the damaged tissue.



  • Sepsis (classically with Pseudomonas aeruginosa) with skin involvement



  • Incidence

    • Arises in approximately 10% of patients with P. aeruginosa sepsis

  • Age

    • May affect patients of any age

  • Gender

    • No gender predilection


  • Buttocks, perineum, genitalia, extremities

Jul 8, 2016 | Posted by in PATHOLOGY & LABORATORY MEDICINE | Comments Off on Ecthyma Gangrenosum

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