Which term refers to a discolored, flat lesion such as freckles or tattoo marks?

The term that refers to a discolored, flat lesion such as freckles or tattoo marks is known as a macule. A macule is characterized by its flatness and distinct color change in the skin, making it easily identifiable. These lesions are typically not raised and can vary in shape and size, but they always remain at the same level as the surrounding skin. Common examples include freckles, which are small, light brown spots, and tattoo marks, which are deliberately made markings on the skin.

In contrast, other options describe different types of skin lesions. A vesicle is a small, fluid-filled blister, a nodule is a solid, raised lesion that can be harder than the surrounding tissue, and a fissure refers to a deep, linear crack or opening in the skin. Understanding these distinctions is crucial for accurate identification and diagnosis in dermatological contexts.