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Figure 2: Skin biopsy from PIP joint showing basal cell vacuolization of epidermis with mild perivascular chronic inflammatory infiltrate and pigment incontinence in upper dermis (H and E, 400)

Figure 2: Skin biopsy from PIP joint showing basal cell vacuolization of epidermis with mild perivascular chronic inflammatory infiltrate and pigment incontinence in upper dermis (H and E, 400)