How is the diagnosis (Basal Cell Carcinoma)?

Based on your specific experience doctors detect skin and skin doctors Basal Cell Carcinoma of the skin in most cases already with the naked eye very well. In addition, Basal Cell Carcinoma with the help of a Dermatoscopes(special Illumination microscope) better recognized and otherskin cancers can be distinguished. 
In some cases, for a definitive diagnosis, a skin biopsy (tissue sampling), followed by Histological examination is required.