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Skin Cancer on the Chest and Décolletage: Signs and What To Do

The chest and décolletage catch a lot of sun — here is what to watch for and when to get a spot checked.

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Written & reviewed by Dr Rupinder Singh Walia — MBBS, FRACGP, Dip. Dermatology (Cardiff, UK) · AHPRA MED0001647256 · special interest in skin cancer medicine & dermoscopy
The signs that mean “get it checked”
New
a new, unusual spot
Changing
size, shape or colour
Growing
getting bigger
Bleeding
or crusting, or itching
Won’t heal
a sore that keeps returning
Any one of these is worth a doctor’s eye — skin cancer is often painless early on.

The chest and décolletage catch a surprising amount of sun over a lifetime, making them a common site for sun damage and skin cancer — often alongside harmless age spots and keratoses that can look worrying. If a spot on your chest is worrying you, a doctor can review a photo of it for $49 and tell you whether it needs an in-person look.

What to look for on the chest

The warning signs are the same anywhere on the body — a spot that is new, changing, growing, bleeding, or will not heal, or a mole that stands out from your others. On the chest, watch especially for:

The three skin cancers on the chest

Get a spot reviewed

Upload a photo and Dr Walia reviews it, providing written next-step advice from the submitted photographs, including when an in-person examination is appropriate — $49 flat. Get a spot reviewed. Learn more about skin cancer.

Not a diagnosis; cannot rule cancer in or out. For a full skin check, see your GP or a skin-cancer clinic in person.

Worried about a mole, mark or changing skin area?

Most skin-cancer advice tells you to watch for change. Skin360AI helps you keep photos of one or more spots connected over time. A spot can be a mole, freckle, mark, lump, sore, patch or any skin area you want to watch. It is not a diagnosis and cannot rule skin cancer in or out.

Free AI skin check A$49 doctor review

If a lesion is new, changing, bleeding, non-healing or worrying you, arrange an in-person GP or skin-cancer clinic assessment.

Frequently asked questions

Is the chest a common place for skin cancer?

Yes — the chest and décolletage catch a lot of sun over the years, so sun-damage and skin cancers are common there, particularly in people who have had significant sun exposure.

What should I watch for on my chest?

A new or changing mole, a scaly or crusty patch that grows, a pearly bump, or a sore that will not heal — and any spot that stands out from the others.

Are age spots on the chest dangerous?

Age spots and sun-damage marks are usually harmless, but they can look similar to — or sit alongside — a skin cancer, so an unfamiliar or changing spot is worth checking.

Related guides

Skin cancer: types & signs →Basal cell carcinoma (BCC) →What melanoma looks like →Nodular & amelanotic melanoma →Lentigo maligna (sun-spot melanoma) →Squamous cell carcinoma (SCC) →Is my mole skin cancer? →A$49 online mole photo review →What does skin cancer look like? →How much is a skin check? →Free AI skin check online →Skin360AI photo follow-up →

Check and watch the spots you care about over time

Use the free AI-assisted skin check to save photos of moles, marks, lumps, sores, patches or other skin areas you want to watch. A photo record is not a diagnosis or a cancer all-clear.

Free AI skin check →

See how skin monitoring works →

A structured photo record is not a diagnosis, cannot exclude skin cancer and does not replace an in-person examination.
Medically reviewed by Dr Rupinder Singh Walia (MBBS, FRACGP, Diploma in Dermatology — Cardiff University, UK; AHPRA MED0001647256). Last reviewed August 2026. This information is general and is not a diagnosis; it cannot rule skin cancer in or out. See your GP or a skin-cancer clinic in person for anything that concerns you.
From the author. This guide reflects the approach in Dr Walia’s book, The Skin Cancer Guide Your Doctor Wants You to Read — a plain-language guide to catching skin cancer early.
Free AI skin check → Free online skin check · photo record · no card