Fig. 4
From: Navigating the cutaneous B-cell lymphomas: avoiding the rocky shoals
Mucocutaneous ulcer, skin of right cheek in a 79-year-old male. The epidermis is ulcerated with a dense and polymorphous infiltrate in the dermis. The infiltrate does not extend to the subcutis, and a band of reactive lymphocytes can be seen at the base of the lesion
