What is a characteristic radiographic feature of an odontogenic keratocyst?

What is a characteristic radiographic feature of an odontogenic keratocyst?

• A. A well-defined, often unilocular or multilocular radiolucent lesion with minimal expansion and possible scalloped borders.
• B. A radi opaque lesion with heavy expansion.
• C. A diffuse ill-defined radiopacity.
• D. A radiolucent lesion with aggressive margins.

Answer: (A)

A characteristic radiographic feature of an odontogenic keratocyst is a well-defined radiolucent area that can appear either as a single chamber (unilocular) or with multiple compartments (multilocular), often with scalloped borders. The border tends to be corticated, and the lesion typically shows minimal expansion of the surrounding bone relative to its size, growing within the medullary space and thinning the cortex rather than destroying it outright. This combination of a clearly defined, radiolucent lesion that may have internal separations and only modest outward expansion is what distinguishes OKCs from lesions that are radiopaque, poorly defined, or aggressively expanding.

A characteristic radiographic feature of an odontogenic keratocyst is a well-defined radiolucent area that can appear either as a single chamber (unilocular) or with multiple compartments (multilocular), often with scalloped borders. The border tends to be corticated, and the lesion typically shows minimal expansion of the surrounding bone relative to its size, growing within the medullary space and thinning the cortex rather than destroying it outright. This combination of a clearly defined, radiolucent lesion that may have internal separations and only modest outward expansion is what distinguishes OKCs from lesions that are radiopaque, poorly defined, or aggressively expanding.