Cone-beam computed tomography axial (A and D) and sagittal (B, C, E, F) planes - large periapical lesion surrounding the right mandibular third and second molars, distal root of the first molar and extending below the second premolar. Size of the lesion: 10.4 mm in buccolingual direction, 15.1 mm in height, and 53.5 mm in mesiodistal direction (10.4 × 15.1 × 53.5 mm).