Fig. 2

Clinical appearance. A reddish-brown plaque with edema was present on the right side of the trunk of his body (a, b). Histopathological findings of the patient’s skin biopsy specimens (magnification, 200×). Inflammatory cells, including lymphocytes, plasma cells and macrophages, were present in the dilated vessels (c). Immunostaining revealed aggregates of CD68 positive histiocytes (d) and endothelial cells lining the vessels were positive for D2–40 (e)