Management of Discolored Failure Root Canal-Treated Upper Lateral Incisor

Figure 5

Histopathological finding of lesion: (a) collagenous tissue with mature fibroblasts, patchy chronic inflammatory cells, scanty vascular channels, and nerve bundle; (b) loosely edematous background with admixed hemorrhage, numerous capillaries, and intense inflammatory cells comprising lymphoplasma cells, macrophages, and neutrophils.

(a)

(b)