Basal cell carcinoma is a common type of skin cancer that develops in basal cells, which form the lowest layer of the epidermis. It frequently appears on sun exposed areas, particularly the face, nose, ears, eyelids, and neck. Although this cancer usually grows slowly and rarely spreads to distant organs.
Basal cell carcinoma (BCC) develops when basal cells grow abnormally, often following prolonged exposure to ultraviolet radiation. It commonly affects areas exposed to sunlight, making the face a frequent location. Although BCC is generally less likely to spread than other skin cancers, it can grow into nearby tissues and cause significant damage if treatment is delayed. Lesions in sensitive areas require particular attention because of their proximity to the eyes, facial nerves, and other important structures.
Basal cell carcinoma can look different depending on its type, location, and stage of development. Some lesions resemble small, shiny bumps, while others appear as flat, scaly patches or persistent sores. Because these changes can resemble harmless skin conditions, a medical examination is important when a suspicious area persists or changes over time.
Common symptoms and risk factors include:
Pearly or shiny bumps: A small, raised lesion may appear translucent, pink, or skin colored, sometimes with visible blood vessels.
Persistent sores: An area may bleed, develop a crust, heal temporarily, and reopen repeatedly.
Flat or scaly patches: Some forms appear reddish or brownish and may resemble eczema or other inflammatory skin conditions.
Changes in sensitive areas: Lesions around the eyelids, nose, lips, ears, or other delicate facial structures may gradually affect nearby tissue.
Ultraviolet radiation exposure: Sunlight and indoor tanning increase the risk of developing basal cell carcinoma.
Other risk factors: Fair skin, increasing age, previous skin cancer, and weakened immune function can increase susceptibility.
A suspicious lesion should be assessed by a qualified healthcare professional, particularly if it grows, bleeds without an obvious cause, develops an open sore, or does not heal. Appearance alone cannot confirm whether a lesion is cancerous.
Diagnosing basal cell carcinoma generally involves examining the skin and reviewing the person's medical history, previous skin cancers, and sun exposure. A skin biopsy is usually required to confirm the diagnosis. During this procedure, a clinician removes a small tissue sample for examination under a microscope.
Treatment depends on the tumor's size, depth, location, subtype, and whether it has been treated previously. Facial lesions can require specialized approaches to remove cancerous tissue while preserving healthy skin and important functions.
Common diagnostic and treatment approaches include:
Skin biopsy: Confirms whether abnormal cells are consistent with basal cell carcinoma and helps identify the tumor subtype.
Surgical excision: Removes the tumor along with a margin of surrounding tissue for examination.
Mohs surgery: Removes cancerous tissue in stages while examining the margins during the procedure. It is often considered for tumors in high risk facial locations where tissue preservation is important.
Curettage and electrodesiccation: Scrapes away the tumor and uses electrical treatment to destroy remaining abnormal cells. It is generally reserved for selected low risk lesions and is unsuitable for many sensitive facial locations.
Topical treatments: Prescription creams, such as imiquimod or fluorouracil, may be used for certain superficial, low risk tumors when appropriate. They are not suitable for every type of BCC.
Radiation therapy: May be considered when surgery is unsuitable or in selected clinical circumstances.
Advanced treatments: Targeted medicines or immunotherapy may be considered for uncommon cases that are locally advanced or have spread and cannot be managed adequately with standard local treatments.
Tumors near the eyes, nose, lips, and ears may require coordination between dermatologists, dermatologic surgeons, ophthalmologists, or other specialists, depending on their location. Follow up examinations are also important because basal cell carcinoma can recur, and people who have had one skin cancer have an increased risk of developing another.
Protecting the skin from ultraviolet radiation can reduce future risk. Practical measures include using broad spectrum sunscreen, wearing protective clothing and a wide brimmed hat, seeking shade, and avoiding indoor tanning. Regular attention to new or changing skin lesions supports timely evaluation and appropriate care.