The ulcer base is covered with a thick white slough. The surrounding mucosa is intensely swollen (edematous) and red. No regenerative epithelium (new skin) is visible. A2 (Active-2):
: Over several months to years, the redness fades, and the scar becomes the same color as the surrounding mucosa, appearing as a white spot. Scoring System sakitamiwa classification
Track the progress of treatment (e.g., using Proton Pump Inhibitors) over time. The ulcer base is covered with a thick white slough
indicates that while the ulcer is still active, the body has begun its healing response. The most notable change at this stage is a decrease in the surrounding edema , making the ulcer margins clearer and more distinct. What defines A2 is the endoscopic appearance of a slight amount of regenerating epithelium at the ulcer margin. Two characteristic features are often present: a thin red halo encircling the ulcer and a clear white slough circle . A2 (Active-2): : Over several months to years,
The white slough is completely gone. The area is covered by new, red-colored regenerating epithelium. This is often referred to as a "red scar". S2 (Scar-2 / White Scar):