What is a common characteristic of a cavernous hemangioma?

A cavernous hemangioma is a type of vascular tumor that is known for being raised and often persists over time. These lesions are typically composed of a network of blood vessels that can create areas of elevated tissue. Unlike some other types of hemangiomas, which may resolve or fade quickly, cavernous hemangiomas tend to be stable, remaining present for many years without significant changes.

The characteristic presentation of being raised aligns with how these lesions manifest clinically, making it an important distinguishing feature in identifying them. This persistence can lead to a clear diagnosis during physical examination, as they do not usually undergo rapid involution or resolution like other types of benign vascular lesions.

Moreover, the other options do not accurately represent the characteristics of cavernous hemangiomas. Rapid fading within weeks is more typical of infantile hemangiomas, while being purple and flat aligns more with different kinds of vascular malformations, like port-wine stains. The notion that they darken or grow larger with age may not be appropriate, as they are generally stable in size after they have developed.