HOSA Dental Terminology Practice

Which term refers to a lesion that grows outward with a larger base?

1. Pustule

2. Sessile

3. Exophytic

4. Papillary

The correct answer is: Exophytic

The term that refers to a lesion that grows outward with a larger base is "exophytic." This term specifically describes growths that protrude or extend outwards from the surface, often resulting in a broad base that anchors the lesion firmly to the underlying tissue. Exophytic lesions can be associated with various conditions, including benign tumors and certain types of infections, and they are notable for their outward expansion, which distinguishes them from other forms of lesions that may grow inward or remain flat. In contrast, other terms describe different characteristics of lesions. A pustule refers to a small, inflamed, pus-filled blister, rather than a growth pattern. Sessile describes a lesion that is attached by a broad base, which does not necessarily imply the outward growth that "exophytic" does. Papillary usually refers to a lesion that has a finger-like or frond-like appearance, which can arise from an exophytic base but does not specifically denote the base size. Understanding these distinctions helps in identifying various types of lesions and their clinical significance.