Tools for skin lesion diagnosis
Useful information and resources to support the diagnosis of skin cancer
Diagnostic tools
The following tools have been developed by Professor Cliff Rosendahl of The University of Queensland and colleagues to support the accurate diagnosis of skin lesions.
These tools should be used when a confident, specific, benign, pattern-recognition diagnosis cannot be made - such lesions are considered "lesions of concern".
These diagnostic posters were updated in 2025, marking their first revision in 10 years. This reflects the enduring integrity and clinical relevance of the original versions.
Chaos, Clues and Exceptions
Use this algorithm for pigmented lesions when a confident benign diagnosis by dermatoscopic pattern recognition cannot be made.
2025 edition
Prediction Without Pigment
Use this algorithm for non-pigmented lesions when a confident benign diagnosis by dermatoscopic pattern recognition cannot be made.
2025 edition
Further learning and reference materials
Online
DermNet
A comprehensive online database of skin conditions.
SCARD
An online surgical log for health professionals who treat skin malignancies in primary care.
Dermoscopedia
In-depth information about dermoscopy.
HealthCert Blog
A compilation of case studies, podcasts, video tutorials and medical research articles.
Dermoscopy Happy Hour
YouTube channel featuring discussions on dermoscopy research and challenging cases.
YouDermoscopy Training app
A fun app that helps improve diagnostic identification of dermatoscopic lesions.
Books
Dermatology Made Easy
By Professor Amanda Oakley
Dermatoscopy and Skin Cancer (2nd edition)
By Professor Cliff Rosendahl
Minor Surgery: A visual guide for office-based surgery from beginner to expert
Dr Samantha Murton