A case of pyoderma vegetans associated with acne conglobata

Area of Science:

• Dermatology
• Clinical Case Study

Background:

• Pyoderma vegetans is a rare, chronic bacterial skin infection characterized by vegetating plaques.
• Distinguishing pyoderma vegetans from similar conditions like pemphigus vegetans is crucial for appropriate management.

Observation:

• A 41-year-old male presented with sacral and perianal vegetating plaques, clinically suggestive of pemphigus vegetans.
• The patient had a history of acne conglobata since adolescence.
• Skin biopsy revealed acanthosis, exocytosis, and dermal inflammatory infiltrates, but notably lacked acantholysis.

Findings:

• Direct and indirect immunofluorescence tests were negative for anti-intercellular antibodies.
• Bacterial cultures from the lesions identified multiple organisms.
• The diagnosis of pyoderma vegetans was established based on clinical and histopathological findings.

Implications:

• This case underscores the importance of thorough diagnostic evaluation, including biopsy and cultures, for differentiating pyoderma vegetans.
• Understanding the relationship between pyoderma vegetans and other pyodermas is essential for effective treatment strategies.
• The co-occurrence with acne conglobata warrants further investigation into potential underlying factors.