Table 1

Classification definitions

Classification	Definition/situation	Examples
Benign	When the clinician is confident that the lesion is benign	Benign naevus or seborrheic keratosis
Uncertain	When the clinician is unsure and would like a second opinion	Any skin lesion about which the clinician is not confident with regards to its benign/malignant status
Malignant	When the clinician is confident that the lesion is malignant	Melanoma, basal cell carcinoma, squamous cell carcinoma, actinic keratosis*

*The malignant classification includes premalignant conditions, such as actinic keratosis.