
ABCDEs of Melanoma Screening
Not all moles are harmless. Discover the ABCDEs of melanoma and how advanced screening can catch skin cancer early.
When it comes to spotting melanoma, early detection can be lifesaving. Traditionally, dermatologists and physicians have used the “ABCDE” checklist as a visual guide to assess whether a mole might be suspicious. This simple acronym is an effective way to help identify skin changes that may indicate melanoma once they're visible to the naked eye.


What Are the ABCDEs?
- A – Asymmetry: One half of the mole doesn't match the other in shape, color, or thickness. A benign mole typically has a symmetrical appearance.
- B – Border Irregularity: Look for uneven, jagged, blurred, or notched edges. Normal moles usually have smooth, well-defined borders.
- C – Color Variation: Multiple shades of brown, black, tan, red, or even white within one mole can be concerning. Uniform color is generally a good sign.
- D – Diameter Larger Than 6 mm: Moles larger than 6 mm (about the size of a pencil eraser) or that are rapidly growing should be evaluated, though some melanomas can be smaller.
- E – Evolving (or Changing): Any change in size, shape, color, texture, elevation, or the appearance of symptoms like bleeding or itching should prompt further investigation.
Looking Beneath the Surface: The Role of Dermoscopy
While the ABCDEs are a helpful guide, the reality is that skin cancer often starts beneath the surface before any of these changes are visible. That's where dermoscopy comes in.
Dermoscopy is a specialized technique that allows trained clinicians to see beneath the skin's surface, revealing subtle features invisible to the naked eye. This can lead to earlier detection of melanoma and other skin cancers—before they become advanced or dangerous.
Making Advanced Screening More Accessible
At our Yorkville clinic, we're committed to bringing the most advanced tools in skin cancer screening to the public—no physician referral needed.
- AI-powered mole mapping
- Full body skin examinations
- On-site biopsies for suspicious lesions
This service is not covered by OHIP (Ontario Health Insurance Plan), but provides a powerful proactive option for anyone serious about skin health and early cancer detection. You'll find detailed information about mole mapping and pricing below.
Don't Wait for Symptoms
If you have moles that fit the ABCDE criteria—or simply want peace of mind—consider scheduling a comprehensive skin check. Early detection gives you the best chance at effective treatment and long-term health.
Book your consultation today. Your skin will thank you.