American Nurses Credentialing Center (ANCC) Exam 2025 – 400 Free Practice Questions to Pass the Exam

The diagnosis of actinic keratosis is substantiated by the characteristics of the lesion described. Actinic keratosis typically presents as well-demarcated, dry, rough, and often tan-colored lesions. These lesions are frequently found on sun-exposed areas of the skin, such as the forearm, particularly in individuals with a history of significant sun exposure, as might be the case for a retired park ranger.

Actinic keratosis is a result of prolonged ultraviolet (UV) light exposure, which leads to changes in the skin. These lesions can be considered precancerous, as they have the potential to progress to squamous cell carcinoma if left untreated. The description of the lesion being "dry" and "rough" aligns well with the typical presentation of actinic keratosis, further supporting this diagnosis.

Other options represent different dermatological conditions. Keratoacanthoma generally appears as a rapidly growing, dome-shaped nodule that often has a central keratin plug. Seborrheic keratosis tends to have a more warty, raised appearance, often with a "stuck-on" look, and while can appear tan, its texture and growth pattern differ from actinic keratosis. Senile lentigo,