Giant cutaneous squamous cell carcinoma of the scalp arising in the setting of folliculitis decalvans

Abstract

Squamous cell carcinoma (SCC) is uncommon in African Americans (AAs), with an incidence of approximately 0.003%. However, it is the most common skin cancer in that patient population. In AAs, SCC typically arises in sun-protected areas and mainly affects patients older than 50 years. We report a case of giant SCC in an AA man in his 40s with long-standing folliculitis decalvans on the scalp. Three previous skin biopsies were inconclusive. A wide excision was performed and the defect was reconstructed with an anterolateral thigh free flap. Histological analysis of the resected specimen revealed a well-moderately differentiated keratinising SCC with clear cell changes, severe mixed inflammation, folliculitis and dermal scar. He was discharged 2 weeks later and has been followed up closely. Four months later, the patient presents with metastatic SCC to an occipital lymph node.