Which type of skin lesion is commonly described as a "cherry angioma"?

A cherry angioma is a type of vascular lesion characterized by a proliferation of small blood vessels, resulting in a red or purple spot on the skin. These lesions are typically benign and often appear on the trunk, arms, and legs. Their presentation as bright red or purple spots is due to the accumulation of blood vessels close to the surface of the skin.

While other choices reflect different skin conditions, they do not align with the defining characteristics of a cherry angioma. A vascular birthmark, which includes cherry angiomas, represents a growth caused by the excess proliferation of blood vessels, thereby making it the correct classification for cherry angiomas. It is important to differentiate this from pigmented nevi, cystic lesions, and keratin-filled cysts, which involve distinct structures and mechanisms.