Abstract
Marjolin's ulcers (MUs) represent a unique degenerative process that results in malignancy. Classically, sites of previous burns are associated with MU but, in fact, any non-healing wound has been found to be a potential source of degeneration. Malignancies that arise include typically cutaneous squamous cell carcinoma (SCC), but SCC at the site of a previous wound is a more aggressive, lethal variant. This report represents a cautionary case of the management of an open wound and highlights a previously undescribed etiology of an MU in the breast.