Squamous cell carcinoma (SCC) is the second most common skin cancer, typically found on the ear, face, lips, hands or lower legs. SCC is more dangerous than basal cell carcinoma because of its ability to spread to other parts of the body. The pre-invasive phase, SCC in situ, is often called Bowen's disease.
Bowen's disease characteristically presents with one or more dry or crusted red or brown patches. Invasive SCC usually grows within a solar keratosis (scaly spots due to sun damage) and presents as a tender scaly or ulcerated lump. Invasive SCC needs to be attended to promptly as there is a risk of secondary spread.
Basal cell carcinoma (BCC) is the most common cancer in the world. Despite this, very few people die from BCC. The two most common types are nodular and superficial BCC which are easily treatable.
The nodular type of BCC appears as a slowly-growing, shiny white, pink or discoloured bump, most often on the face or neck.
The superficial type of BCC presents as one or more irregular red scaly patches growing on the trunk or limbs.