Basal cell carcinoma (BCC) is the most common cancer worldwide and more common than all other cancers combined.
1 About 3.3 million individuals in the United States are diagnosed each year with nonmelanoma skin cancer, and approximately 80% of the lesions are BCC tumors.
2 Periocular BCC is diagnosed in 4.4% to 18.0% of all BCCs, accounting for approximately 90% of malignant periocular tumors.
3,4 Although most periocular BCCs are curable by surgery, the disease progresses in a minority of patients to a more extensive locally advanced BCC for which surgery and radiotherapy are inappropriate because a cure is unlikely and/or because surgery might result in severe ocular morbidity. Treatment of periocular locally advanced BCC (POLA-BCC) is especially complex because the need to remove periocular or orbital tissues (exenteration or full-thickness eyelid resection) often results in severe disfigurement and poor visual outcome or blindness, leading to a dramatic reduction in functionality and quality of life.
5,6