Fig. 5
Post-ablation Histological results at 1 year. (A) The microwave ablation region (black arrow) was a concave and pale area of infarct with no carbonization and shown to be within the center of the septum with no observable injury to the endocardium. (B) A distinct boundary (red arrow) was observable between the ablated region (pink stain) and normal myocardium (red stain) as shown via H&E (magnification ×200). (C) The peri-ablated region (red arrow) presented as normal myocardial cells via H&E stain (magnification ×50) (D) The ablated area and peri-ablated area (red arrow) are shown via Masson staining used on the same section as those in C. Fibrosis scar tissue is characterized by blue staining (magnification ×50)