Fig. 2

Hematoxylin-eosin and immunohistochemical staining of vulvar ulcers. Diffuse noncohesive sheets of medium-sized myeloid precursor cells in the dermis (a); Immunohistochemical staining result is positive for myeloperoxidase (b), lysozyme (c), CD43 (d), CD68 (e) and ki-67 (f)