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Image Number 77 (Pyoderma gangrenosum)

 
Morphology:
Ulcer

Diagnosis: Pyoderma gangrenosum

Site: Leg

Sex: F

Age: 30

Type: Clinical and Histology

Description: Undermining after 3 weeks steroids

Submitted by: Ian McColl

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Differential Diagnosis

History: This patient has underlying Crohns disease which had been well controlled.She developed a painful ulcer on her lower leg after minimal trauma.The ulcer has rapidly expanded with undermining of the edges.The last images show the ulcer after 3 weeks of high dose steroids orally.

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