- Apices of several lower incisors.
- Middle aged adults (typically black women).
- Round, monolocular, often multiple.
- Adjacent teeth: typically vital, not displaced, not resorbed. The periapical ligament space is intact.
- Small, up to 1 cm in diameter.
- Early stage: Radiolucent, not corticated.
- Intermediate stage: Radiopacity within the apical radiolucencies.
- Late stage: Densely radiopaque but surrounded by a thin radiolucent line.