ABSTRACT
In general, differential diagnosis of basal cell carcinoma (BCC) became easy and definite after the introduction of dermoscopy. However, especially on the face, there can be a few challenging cases, for instance, the tiny incipient unspecific papules, the collision of tumors frequently found on sun-damaged skin, and finally the featureless reddish plaques or tumors where a melanocytic tumor cannot be ruled out. The aid of reflectance confocal microscopy (RCM) in such situations can be crucial (Table 35.1). In addition, there are several benign cutaneous lesions that may be clinically and dermoscopically indistinguishable. Sebaceous tumors and other nontumoral conditions are discussed in the corresponding sections. In this chapter, three particular tumors that can share clinical and/or dermoscopic features with BCC are presented.
