Specialists can usually diagnose 90% of all skin lesions by their appearance and by the use of dermatoscopy (a special magnifying lens using polarizing light). All skin lesions removed are sent to the pathologist for analysis and examination by microscope. The pathologist can offer an accurate diagnosis in 99% of cases. It is therefore very important that you follow up the results of the pathology by contacting Dr Trehan or your general practitioner. 10% of skin lesions which were initially thought to be benign may actually be malignant (cancerous) requiring further treatment.