Skin Cancer Type Comparision


Type Basal Cell Carcinoma Squamous Cell Carcinoma Malignant Melanoma
Cell origin Epidermis – Basal cells Epidermis – Keratinocytes Epidermis – Melanocytes
Region affected Sun exposed skin Sun exposed skin Sun and non-sun exposed skin
Growth rate Slow Faster than basal cell carcinoma Rapid growth
Appearance Dome or nodular lesions Poorly defined – ulcerating, domed, papules Rapid changes in

  1. size (doubles in 3-8 mo)
  2. colour (blue, brown & black present in one lesion)
  3. border – raised surface, irregular border with crusting
Metastasis No metastasis, yet infiltrate into deeper layers Metastasis to lymph nodes Metastasis to brain, bone, lung and liver via lymph nodes



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