Actinic keratosis (AK) is a condition caused by excessive exposure to ultraviolet (UV) radiation from sunlight. It is characterized by scaly patches on the skin, typically on the face, ears, scalp, lips, hands, forearms, and neck. These lesions can range in size from a few millimeters to several centimeters and may be tan, pink, or red in color. Although AK is not cancerous, it can develop into a form of skin cancer called squamous cell carcinoma (SCC) if left untreated.
The exact amount of time it takes for AK to become cancerous is not known, but studies suggest that the risk of SCC increases the longer the AK lesions are present. The risk is also higher in people who have had a lot of sun exposure, are fair-skinned, have a family history of skin cancer, or have weakened immune systems.
It is important to note that not all AK lesions will become cancerous, and the risk can be reduced by treating the lesions early. Treatment options for AK include topical creams, cryotherapy, photodynamic therapy, and surgical removal. The type of treatment used will depend on the size and number of lesions, as well as the patient’s overall health.
In conclusion, there is no definitive answer to the question of how long it takes for actinic keratosis to become cancerous, as this varies from person to person and depends on a variety of factors. However, it is important to note that the risk of cancer increases with time, so it is important to seek treatment for AK as soon as possible.