A 60-year-old woman presents with a red, crusted, scaly patch on her leg that won't heal. It has been present for a few weeks and sometimes bleeds. What could be the potential diagnosis?
The description of a red, crusted, scaly patch that sometimes bleeds and won't heal suggests the possibility of squamous cell carcinoma (SCC). SCC often presents as a non-healing ulcer or a red, scaly patch on sun-exposed skin. A biopsy should be performed to confirm the diagnosis. If confirmed, treatment typically involves surgical removal of the lesion.