Lupus erythematosus vegetans

A 29-year-old woman with known systemic lupus erythematosus presented with exudative and vegetative plaques bilaterally on her groins. The clinical an d histological findings indicated a diagnosis of pyodermatitis vegetans. Di rect immunofluorescence studies revealed the presence of a definite basemen t membrane zone band for IgG, IgM and C3, favouring lupus erythematosus. We propose the term lupus erythematosus vegetans for this combination of clin icopathological and immunohistological findings.