How is dx of basal cell carcinoma?

Biopsy (• Types of skin biopsy that may be used to confirm the diagnosis and determine the histologic subtype of BCC include the following: • Shave biopsy: Most often, the only biopsy that is required • Punch biopsy: May be indicated in the case of a pigmented lesion if there is difficulty distinguishing between pigmented BCC and melanoma; ensures that the depth of the lesion can be determined if it proves to be a malignant melanoma)