Wide inflammation with diffuse circumferential erosions, epithelial atrophy, cryptitis and cryptical abscess without granulomas. Lymphocytic infiltration with atypical lymphocytes and intraepithelial lymphocytes (similar to MC). No CD20+ cells. Presence of CD3+T, CD79a+B and CD68+ cells. The gene discussed is CD79A; the disease is Granuloma.