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Figure 1: (a) Round, reddish-purple plaques with central atrophy on the back. (b) Yellowish plaques on the arm. (c) A reddish-purple plaque with a shiny and infiltrative rim on the inguinal region. (d) Histopathological picture of a plaque on the back showing collagen degeneration and granuloma (bar = 250 μm). (e) A histopathological picture of a plaque on the arm showing naked granuloma (bar = 100 μm). (f) Histopathology picture of an inguinal region showing lichenoid lymphocytic infiltration in the papillary dermis, vacuolization of the basal layer, and Civatte bodies and melanophages in the upper dermis (bar = 50 μm). (g) An immunohistopathological picture of anti-CXCR3 staining in necrobiosis lipoidica (bar = 100 μm, positive cells stained red). (h) An immunohistopathological picture of anti-CXCR3 staining in sarcoidosis (bar = 100 μm, positive cells stained red). (i) An immunohistopathological picture of anti-CXCR3 staining in lichen planus (bar = 100 μm, positive cells stained red).

Figure 1: (a) Round, reddish-purple plaques with central atrophy on the back. (b) Yellowish plaques on the arm. (c) A reddish-purple plaque with a shiny and infiltrative rim on the inguinal region. (d) Histopathological picture of a plaque on the back showing collagen degeneration and granuloma (bar = 250 μm). (e) A histopathological picture of a plaque on the arm showing naked granuloma (bar = 100 μm). (f) Histopathology picture of an inguinal region showing lichenoid lymphocytic infiltration in the papillary dermis, vacuolization of the basal layer, and Civatte bodies and melanophages in the upper dermis (bar = 50 μm). (g) An immunohistopathological picture of anti-CXCR3 staining in necrobiosis lipoidica (bar = 100 μm, positive cells stained red). (h) An immunohistopathological picture of anti-CXCR3 staining in sarcoidosis (bar = 100 μm, positive cells stained red). (i) An immunohistopathological picture of anti-CXCR3 staining in lichen planus (bar = 100 μm, positive cells stained red).