Melanoma in situ of eyelid, including canthus
Melanoma is a type of skin cancer that occurs when melanocytes, the pigment cells that give color to the skin, become malignant. Melanoma in situ refers to the early stage of melanoma, where the cancer cells are only found in the top layer of skin and have not yet spread to deeper layers or other parts of the body. When melanoma occurs on the eyelid, including the canthus (the corner where the eyelids meet), it is especially concerning because it can affect vision and may spread to nearby tissues.
Symptoms of melanoma on the eyelid may include a new mole or lump, changes in the shape or color of an existing mole or spot, itching or bleeding, or a sore that doesn't heal. Because the eyelid is a delicate and sensitive area, any changes should be checked by an eye doctor or dermatologist right away.
The diagnosis of melanoma in situ of the eyelid is typically made through a biopsy, where a small sample of tissue is removed and examined under a microscope. Treatment may involve surgical excision of the affected area, with or without reconstruction of the eyelid. In some cases, radiation therapy or topical chemotherapy may also be used.
Prevention and early detection
Prevention of melanoma involves protecting the skin from UV radiation, which is the main cause of skin cancer. This includes wearing sunscreen with an SPF of at least 30, avoiding sun exposure during peak hours, and wearing protective clothing and sunglasses. Regular skin checks are also important for early detection of melanoma and other skin cancers.
- Check your skin regularly for any new moles or changes to existing moles or spots.
- Use the ABCDE rule to identify potential warning signs of melanoma:
- A is for asymmetry: one half of the mole doesn't match the other half.
- B is for border: the edges of the mole are irregular, ragged, blurred, or notched.
- C is for color: the mole has varying shades of brown, black, or tan, or may include areas of white, gray, red, pink, or blue.
- D is for diameter: the mole is larger than 6 millimeters (about the size of a pencil eraser).
- E is for evolving: the mole is changing in size, shape, color, or other characteristics.
- If you notice any changes or concerns, see a doctor right away.
Melanoma in situ of the eyelid, including canthus, is a serious condition that requires prompt diagnosis and treatment. By protecting