What does skin cancer look like

Overview

Skin cancer is the abnormal growth of skin cells, most often caused by exposure to ultraviolet (UV) radiation from the sun or tanning beds. It typically develops in areas of the skin that have had the most sun exposure. While skin cancer can affect anyone regardless of skin tone, individuals with fair skin, blond or red hair, and blue or green eyes are at higher risk. Recognizing the visual signs of skin cancer is crucial for early detection and treatment, which dramatically increases the chances of a full recovery.

Common Types and Their Appearance

There are three main types of skin cancer, each with distinct visual characteristics:

Basal Cell Carcinoma (BCC)

Basal cell carcinoma is the most common type of skin cancer. It arises from the basal cells in the epidermis, the outermost layer of skin. BCCs often appear on sun-exposed areas like the face, ears, neck, scalp, shoulders, and back. They tend to grow slowly and rarely spread to other parts of the body, but they can be disfiguring if left untreated.

Visual Signs of BCC:

• A pearly or waxy bump.
• A flat, flesh-colored or brown scar-like lesion.
• A sore that bleeds and scabs over, then recurs.
• A red or pink patch.
• An open sore with a raised, rolled border.

BCCs can sometimes resemble common skin conditions like eczema or psoriasis, making a professional diagnosis essential.

Squamous Cell Carcinoma (SCC)

Squamous cell carcinoma is the second most common type of skin cancer. It develops in the squamous cells, which make up the middle layer of the epidermis. Like BCC, SCC commonly appears on sun-exposed areas, but it can also occur in scars or chronic skin sores elsewhere on the body. SCC has a higher potential to grow deep into the skin and spread to other parts of the body than BCC, though this is still relatively uncommon.

Visual Signs of SCC:

• A firm, red nodule.
• A flat sore with a scaly, crusted surface.
• A rough, scaly patch that may bleed.
• A sore that doesn't heal or returns.
• Can sometimes present as a wart-like growth.

SCC can sometimes be mistaken for a common wart or an infected hair follicle.

Melanoma

Melanoma is the least common but most dangerous type of skin cancer because it is more likely to spread to other parts of the body if not caught early. It develops from melanocytes, the cells that produce melanin, the pigment that gives skin its color. Melanoma can develop from an existing mole or appear as a new, unusual-looking spot on the skin. While it often occurs on the trunk of the body in men and on the legs in women, it can appear anywhere, including areas not typically exposed to the sun.

Visual Signs of Melanoma (The ABCDEs):

• A - Asymmetry: One half of the mole or spot does not match the other half.
• B - Border: The edges are irregular, ragged, notched, or blurred.
• C - Color: The color is not uniform and may include shades of brown or black, sometimes with patches of pink, red, white, or blue.
• D - Diameter: The spot is larger than 6 millimeters (about the size of a pencil eraser), although melanomas can sometimes be smaller.
• E - Evolving: The mole or spot looks different from the others or is changing in size, shape, or color.

Any new or changing mole or skin lesion should be evaluated by a doctor. The 'ugly duckling' sign, where a mole looks distinctly different from all other moles on your body, is also a warning sign.

Other Less Common Types of Skin Cancer

While BCC, SCC, and melanoma are the most prevalent, other rarer forms of skin cancer exist, such as Merkel cell carcinoma and Kaposi sarcoma, which may present with different visual cues and often require specialized diagnostic approaches.

When to See a Doctor

It is essential to perform regular self-examinations of your skin and to see a dermatologist or doctor if you notice any new or changing skin growths, sores that don't heal, or any of the suspicious signs mentioned above. Early detection is key to successful treatment. Don't hesitate to seek professional medical advice for any skin concerns.