Figure 2. Histopathological findings of annular erythema
(a) A monotonous dense infiltration is observed around vessels and adnexa in the dermis and subcutaneous tissue (hematoxylin-eosin stain, loupe image). (b) Mononuclear cells with dense chromatin and mild atypia in the nucleus are present. A few mitotic cells are observed (hematoxylin-eosin stain, ×1000). (c, d, e) Immunohistochemical analysis (×400). Infiltrating cells are reactive to the anti-CD79α antibody (c), CD10 (d), and terminal deoxynucleotidyl transferase (e).