The video tutorial covers the layers of the epidermis and their association with skin cancer. It explains the three major types of skin cancer: basal cell carcinoma, squamous cell carcinoma, and malignant melanoma. Basal cell carcinoma is the most common but least malignant, arising from the stratum basale. Squamous cell carcinoma, originating from the stratum spinosum, is more dangerous due to its potential to metastasize. Malignant melanoma, the most deadly, affects melanocytes and spreads rapidly. The ABCD rule is used for melanoma detection, focusing on asymmetry, border irregularity, color, and diameter.

Compare and contrast basal cell carcinomas and squamous cell carcinomas in terms of their malignancy and commonality.

How can squamous cell carcinomas be prevented from metastasizing?

What is the ABCD rule for detecting malignant melanomas?