• Asymptomatic lesion which usually is located at the periapical region of lower incisors.
• Middle aged adults (typically black women).
• Radiographically appears as a round unilocular or multiple lesions.
• Adjacent teeth: typically vital, not displaced, not resorbed. The periapical ligament space is intact.

Radiographic stages:

• Early stage: Radiolucency, not corticated.
• Intermediate stage: Radiopacities within the apical radiolucency.
• Late stage: Densely radiopaque but surrounded by a thin radiolucent line.