Basal cell carcinoma (BCC) can occur in several shapes and sizes. Test your knowledge:
1) Nodular BCC: These tumors present as a nodule on the skin and appear translucent or pearly in color.
2)Ulcerating (Infiltrating) BCC: These tumors present as an erosion or ulcer, commonly with overlying crusting and a rolled border. These are commonly translucent, pearly, smooth and firm with small blood vessels (i.e. telangiectasias)
3) Sclerosing (Morpheaform) BCC: These tumors appear as a small patch or a superficial scar. They are commonly ill-defined, skin-colored and whitish. On a microscopic level, these tumors tend to grow with finger-like strands of tumor that extend far into the surrounding tissue. Excision usually requires a wider margin.
4) Superficial Spreading (or multi-centric): These tumors appear as thin plaques and are commonly pink or red in color, and have a fine threadlike border. This sub-type can exhibit scaling.
5) Pigmented BCC: Some experts consider this type as a subtype of one of the 4 main BCC types. These lesions may be brown, blue or black in color. They are commonly confused with melanoma and pre-melanoma tumors which are commonly pigmented, but pigmented BCC are usually harder in texture.