Abstract
INTRODUCTION: Pyoderma gangrenosum (PG) is an uncommon, but serious, non infectious, neutrophilic dermatosis that causes cutaneous necrosis with a characteristically rapid evolution. PRESENTATION OF CASE: A 13 year-old girl was admitted with a postoperative infected wound, which was surgically debrided. A new more aggressive lesion on the left upper extremity led the patient to the intensive care unit. Clinical diagnosis of pyoderma gangrenosum was introduced with a crucial delay. An immediate clinical improvement after immunosuppressive therapy with systemic corticosteroids and cyclosporine was observed. The extensive cutaneous deficits were covered with keratinocyte cultured cells with an aesthetically good outcome. DISCUSSION: Diagnosis of PG in young children is very difficult, especially without dermatological evaluation. This deforming ulcerative skin disease is probably a result of altered immunologic reactivity. Its early recognition may prevent unnecessary surgical treatment which leads to dangerous complications. CONCLUSION: To our knowledge this is the first case of PG with such a widespread distribution reported in a child, as a consequence of iatrogenic pathergy.