Diagnostic concordance in cutaneous vasculitis: A retrospective study from a fourth-level hospital in Colombia

Cutaneous vasculitis represents a diagnostic challenge due to its varied clinical presentations and potential overlap with other dermatological conditions. The objective of our study was to assess the concordance between clinical suspicion and histopathological findings, characterize histopathological subtypes, and analyze inflammatory markers in cutaneous vasculitis.Methods This study analyzed patients who underwent skin biopsy. Patients were categorized based on clinical suspicion of vasculitis by dermatologists or rheumatologists. Categorical variables are reported as frequencies and percentages. Diagnostic concordance was assessed using Cohen's kappa coefficient. Differences in inflammatory markers, including erythrocyte sedimentation rate and C-reactive protein levels, were evaluated using a non-parametric test. All statical analyses were conduced using R.