All patients with suspected<unk>  require biopsy. Findings on biopsy may distinguish the sub-type and the stage of<unk> . Staging of<unk>  is essential to determine the prognosis. Staging is based on the eight edition American Joint Committee on Cancer (AJCC)<unk>  TNM Classification.
Melanoma diagnostic study of choice
Melanocytic nevus diagnostic study of choice
Basal cell carcinoma diagnostic study of choice
Squamous cell carcinoma of the skin diagnostic study of choice
Extramammary Paget's disease differential diagnosis
Melanocytic nevus other imaging findings
Basal cell carcinoma other diagnostic studies
Extramammary Paget's disease other diagnostic studies