Receiving a skin cancer diagnosis is a pivotal moment. Once the initial treatment is complete, the focus shifts from eradication to long-term surveillance. Because you have already had a skin cancer, the biological threshold of your skin has changed, and your risk of developing a second lesion is significantly higher than that of the general population.
A structured monitoring plan is the most effective way to catch new changes early, often allowing for simple topical treatments or minor procedures rather than extensive surgery.
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- Recommended Check Frequencies
- Self-Examination: The “Ugly Duckling” Method
- Warning Signs: What to Look For
- Advanced Technology in Surveillance
- Why Professional Reviews Matter
Recommended Check Frequencies
There is no “one size fits all” schedule for skin cancer surveillance. The following frequencies are provided as general advice; however, your specific doctor will give you tailored advice as it pertains to your individual medical needs and history.
1.High-Risk Surveillance (Every 3–6 Months): This is typically recommended for patients who have had multiple Squamous Cell Carcinomas , a history of Melanoma, or those who are immunosuppressed. The first 24 months after a diagnosis are the most critical, as this is when recurrences are most likely to appear (1).
2.Moderate-Risk Surveillance (Every 6–12 Months): This is standard for patients with a single Basal Cell Carcinoma or extensive Actinic Keratoses.
3.Long-Term Monitoring: Once you have remained clear for several years, we may transition back to annual full-body checks, provided you are strictly following prevention protocols like the Vitamin B3 regimen and secondary prevention strategies.
How to Perform a Self-Examination
Professional checks are vital, but 50% of melanomas and many non-melanoma skin cancers are first detected by patients or their partners between scheduled appointments (2).
The “Ugly Duckling” Sign
Most moles and spots on your body should look relatively similar to one another. An “Ugly Duckling” is a spot that stands out because it looks, feels, or grows differently than its neighbours. If a spot looks darker, redder, or crustier than the others around it, it requires immediate professional review.
The “Touch Test”
Often, a precancerous Actinic Keratosis is felt before it is seen. Run your fingers over sun-exposed areas like the face, scalp, and backs of the hands. Any spot that feels rough, like sandpaper, or “gritty” and does not resolve should be monitored and reported.
Warning Signs: What to Look For
While a professional dermatoscope is needed for a definitive diagnosis, you should watch for these common red flags:
- Non-Healing Spots: Any sore, scratch, or “pimple” that bleeds, crusts, or fails to heal completely within three weeks.
- Changing Texture: A spot that becomes thickened, raised, or develops a firm “horn” on the surface.
- New Pigmentation: A new freckle or mole appearing in adulthood, or an existing mole that changes shape, colour, or size.
- Sensation: A spot that begins to itch, tingle, or become persistently tender.
If you notice any of these changes, do not wait for your next scheduled check. Early intervention is the key to avoiding invasive surgery.
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Advanced Technology in Surveillance
In our clinical practice, we move beyond the naked eye for all patients, but for those in a high-risk category, this technological oversight is essential.
If you have a history of multiple skin cancers, I recommend that your doctor utilizes a system to digitally compare your mole photos over time. Ideally, this involves a dedicated full skin mapping suite.
- Digital Dermoscopy: This allows us to take high-resolution images of specific moles to monitor for microscopic changes that are invisible to the human eye.
- Total Body Photography (Skin Mapping): By creating a high-definition “baseline map” of your entire body, we can precisely identify new “Ugly Ducklings” or subtle changes in existing spots at every follow-up appointment.
- Field Monitoring: We track the health of your sun-damaged “fields” to determine if preventative treatments like Laser-Assisted PDT are required to clear precancerous damage.
Frequently Asked Questions
What is the difference between a “Skin Review” and a “Full Skin Check”? A full skin check is a comprehensive head-to-toe examination. A skin review is often a shorter, targeted appointment focused on a specific area of concern or a follow-up on a previous “field” of damage.
Should I use a skin-checking app on my phone? While apps can be helpful for taking photos to show your doctor, they are not a substitute for professional diagnosis. Studies show that AI-based apps can have significant error rates and should only be used as a documentation tool to track your “Ugly Ducklings.”
If I find a spot, should I wait for my 6-month check? No. If you find a spot that meets the “Ugly Duckling” criteria or is non-healing, you should book a spot check immediately. Early Squamous Cell Carcinomas can grow significantly in just a few weeks.
References
(1) Cancer Council Australia. Clinical practice guidelines for the diagnosis and management of melanoma. National Health and Medical Research Council. 2024. (2) Skin Cancer Foundation. Self-Examination: How to check your skin. SCF. 2023. (3) American Academy of Dermatology. Detection and outcomes in patient-led skin reviews. AAD. 2024.