BCC can remain BCC occurs at the site of previous trauma, such as scars, thermal burns, and injury. Nodular BCC is the most common form. The lesion begins as a pearly white or pink, dome-shaped papule resembling a molluscum contagiosum or dermal nevus. The mass extends peripherally. The lesion may remain flat.
Ulcerated areas heal with scarring, and patients often assume their conditions are improving.
BCCs may contain melanin that imparts a brown, black, or blue color through all or part of the lesion. There are several factors to consider before choosing the best treatment modality. The most important are clinical presentation, cell type, tumor size, and location. Nodular and superficial BCCs are the least aggressive and can be completely removed by electrodesiccation and curettage or by simple Mohs' micrographic surgery. Mohs' surgery is a microscopically controlled technique that may be used for all types and sizes of BCCs.