Basal Cell Carcinomas in Trauma-Related Scar Tissue: A Rare Case Series.

Basal cell carcinoma (BCC) is the most common skin cancer type in humans. Various factors play a role in BCC occurrence, but sunlight exposure is the most common etiologic factor. This case series presents three patients who had scarring after severe traumas (a deep abrasion, burn, and puncture injury); a long time after the respective traumatic events, a BCC occurred in the scar tissue. The lesions were excised, and BCCs were diagnosed based on histopathology. Although several etiologic factors may play a role in trauma-related BCC, the main mechanism remains unclear. A correct diagnosis with biopsy and an assessment of the lymphatic system are crucial to prevent aggressive procedures, and BCC should be kept in mind when lesions are found in scar tissue.