Large Anogenital Bowen Disease Misdiagnosed as Chronic Eczema for Nine Years: A Case Report Highlighting the Importance of Early Biopsy.

Persistent treatment-resistant anogenital plaques should not be repeatedly managed as chronic eczema without histopathological confirmation. Early biopsy of atypical or non-resolving lesions facilitates timely diagnosis of Bowen disease, prevents prolonged diagnostic delay, and enables treatment before progression to invasive squamous cell carcinoma.