Eyelid cancer most often appears as a small, painless bump or sore on the eyelid that doesn’t heal. It can look like a pearly nodule, a flat scaly patch, a crusty spot that bleeds repeatedly, or an area where eyelashes have fallen out for no clear reason. Because the eyelid is such a thin, sun-exposed piece of skin, it accounts for roughly 5 to 10 percent of all skin cancers, and the lower eyelid is affected far more often than the upper one.
What makes eyelid cancer tricky is that early growths often resemble common, harmless conditions like styes, chalazia, or chronic blepharitis. Knowing the specific visual features of each type helps you recognize when something on your eyelid deserves a closer look.
Basal Cell Carcinoma on the Eyelid
Basal cell carcinoma is by far the most common eyelid cancer, making up about 85 to 95 percent of all malignant eyelid tumors. It typically shows up on the lower eyelid or the inner corner of the eye, the areas that catch the most cumulative sun exposure over a lifetime.
The classic appearance is a firm, pearly or waxy bump with tiny blood vessels visible on its surface. These blood vessels often look like fine red lines threading across or around the nodule. As it grows, the center of the bump may crater inward, forming a small ulcer that bleeds, crusts over, and then bleeds again. Some basal cell carcinomas look flat rather than raised, presenting as a shiny, slightly translucent patch that blends into the surrounding skin. In either form, the borders tend to be rolled or slightly raised compared to the center.
One hallmark sign is the loss of eyelashes in the area directly over the growth. The tumor gradually destroys the hair follicles as it expands. If you notice a patch of missing lashes alongside a bump or sore that keeps recurring in the same spot, that combination is a strong visual signal. Basal cell carcinoma grows slowly and almost never spreads to other parts of the body, but left untreated it can invade deeper tissues around the eye socket.
Squamous Cell Carcinoma
Squamous cell carcinoma accounts for roughly 5 percent of eyelid cancers. It tends to look rougher and more textured than basal cell carcinoma. You might see a scaly, reddish patch or a thickened, wart-like bump on the eyelid margin. The surface often feels crusty or raw, and it may bleed when touched or rubbed.
Unlike basal cell carcinoma’s smooth, pearly quality, squamous cell lesions often have an irregular, rough surface that can resemble a patch of dry, irritated skin. They sometimes develop from pre-existing sun-damaged patches called actinic keratoses, small rough spots that have been on the skin for months or years before transforming. Squamous cell carcinoma is more aggressive than basal cell. It grows faster and carries a small but real risk of spreading to nearby lymph nodes, so early recognition matters more.
Sebaceous Gland Carcinoma
This is a rarer but more dangerous form of eyelid cancer, arising from the oil-producing glands inside the eyelid. It makes up about 1 to 5 percent of eyelid malignancies, but it’s disproportionately serious because it’s easy to misdiagnose and tends to spread more readily than the other types.
Sebaceous gland carcinoma often mimics a chalazion, the firm, round bump people get when an oil gland in the eyelid becomes blocked. It appears as a hard, yellowish or reddish lump, usually on the upper eyelid where these glands are more concentrated. The key warning sign is a “chalazion” that keeps coming back in the same spot after treatment or drainage, or one that doesn’t resolve after several weeks. It can also cause thickening and redness of the eyelid margin that looks like chronic blepharitis or conjunctivitis, sometimes affecting the entire lid.
Because it so closely resembles benign conditions, sebaceous gland carcinoma is frequently treated as a stye or infection for months before anyone suspects cancer. If you’ve had a recurring lump in the same location three or more times, or if your eyelid inflammation isn’t responding to standard treatments, a biopsy can rule it out.
Melanoma of the Eyelid
Eyelid melanoma is rare, representing fewer than 1 percent of eyelid cancers, but it’s the most aggressive type. It looks similar to melanoma anywhere else on the body: a dark brown or black spot with irregular borders, uneven coloring, or a changing shape. It may appear as a new pigmented lesion or develop within an existing mole or freckle on the eyelid.
The same ABCDE guidelines used for skin melanoma apply here. Look for asymmetry (one half doesn’t match the other), border irregularity, color variation within the spot, a diameter larger than about 6 millimeters (the size of a pencil eraser), and evolution or change over time. Any darkly pigmented spot on the eyelid that is growing, changing color, or bleeding warrants prompt evaluation. Melanoma can spread to distant organs, so catching it early on the eyelid dramatically improves outcomes.
How to Tell Cancer From a Stye or Chalazion
Styes and chalazia are extremely common, and the vast majority of eyelid bumps are benign. A few features help distinguish them from something more concerning:
- Healing timeline. A stye typically peaks in pain and swelling within a few days, then resolves within one to two weeks. A chalazion may take longer but generally shrinks steadily. A cancerous growth doesn’t follow this arc. It either persists unchanged or slowly enlarges over weeks to months.
- Recurrence in the same spot. Styes and chalazia can recur, but they usually pop up in different locations along the eyelid. A lump that returns to the exact same place repeatedly is more suspicious.
- Pain. Most eyelid cancers are painless, especially early on. Styes are typically tender or sore to the touch.
- Eyelash loss. Benign bumps don’t destroy lash follicles. If the lashes over a bump have fallen out or are visibly distorted, that’s a red flag.
- Bleeding or ulceration. A spot that bleeds, crusts, heals, and then opens up again is behaving more like a skin cancer than an infection or clogged gland.
- Change in eyelid shape. A growth that distorts the eyelid margin, causes notching, or pulls the lid away from the eye suggests tissue invasion.
Who Gets Eyelid Cancer
Fair skin is the strongest risk factor, particularly in people with light eyes and a history of significant sun exposure. Ultraviolet radiation is the primary driver for basal cell and squamous cell carcinomas on the eyelid, just as it is elsewhere on the skin. People over 50 are most commonly affected, though eyelid cancers can appear at younger ages in those with heavy UV exposure or a history of tanning bed use.
Immunosuppression also raises risk. People who have received organ transplants and take anti-rejection medications develop skin cancers, including on the eyelids, at significantly higher rates than the general population. A personal history of skin cancer elsewhere on the body increases the likelihood of developing a separate lesion on the eyelid as well.
What Happens After a Suspicious Spot Is Found
Diagnosis requires a biopsy, a small tissue sample taken under local anesthesia. This is a quick procedure, usually done in an office setting, and it’s the only way to confirm whether a lesion is cancerous and which type it is.
If the biopsy confirms cancer, the standard treatment is surgical removal. Because the eyelid is a delicate structure responsible for protecting the eye and distributing tears, surgery is typically performed by an oculoplastic surgeon or through a technique called Mohs surgery, where tissue is removed in thin layers and examined under a microscope during the procedure. This approach preserves as much healthy tissue as possible while ensuring the cancer is fully cleared. For small, early-stage tumors, cure rates with surgery exceed 95 percent.
Reconstruction of the eyelid after removal is common and usually happens in the same surgical session. Most people heal well and retain normal eyelid function, especially when the cancer is caught while still small. Larger tumors that have grown into the orbit or surrounding structures require more extensive surgery and sometimes radiation therapy, which is why early detection based on visual recognition makes a meaningful difference in outcomes.