A Giant Basal Cell Carcinoma Misdiagnosed and Mistreated as a Chronic Venous Ulcer.

Basal cell carcinoma (BCC) is the most common cutaneous malignancy. Giant BCCs are quite rare. They can cause extensive local invasion, disfigurement, and metastasis. We present a case of a 58-year-old woman with an unrecognized and inadequately treated ulcerated giant BCC sized 12.5 × 10.0 cm that occurred on her left lower leg without any sign of metastasis. Neglect and inadequate treatment of the primary lesion are the most important contributing factors responsible for size in giant BCC.