Basal Cell Carcinoma is a locally destructive type of skin cancer that is notorious for recurrence when not adequately treated. It can become quite disfiguring if left untreated, especially when located in cosmetically sensitive areas such as the nose. Typically this type of skin biopsy is performed for diagnosis and is not adequate treatment for a skin cancer. Biopsies sample a portion of the lesion, leaving some behind. This type of "sampling" biopsy is not intended to remove the entire lesion. It is not advisable to leave a known skin cancer untreated as it will likely grow and become more of a problem to remove in the future. Mohs micrographic surgery allows for 100% margin control and is tissue-sparing, which means it offers the highest cure rate while preserving as much normal tissue as possible.