Histology

The epidermis shows reticular degeneration and necrosis. There is a dense perivascu-lar/periadnexal nodular infiltrate in the dermis containing medium-sized lymphocytes with irregular, hyperchromatic nuclei. In some cases, the infiltrate displays a prominent angiocentric/angiodestructive pattern (7). In other patients,

Figure 2 Vesiculopapules and small ulceration on the ear. (Courtesy of K. Iwatsuki. From Burg G, LeBoit Ph, eds. Unusual Lymphomas. Steinkopff-Verlag, 2001.)

there is septal or lobular panniculitis in company with vasculitis affecting small and medium-sized vessels in the mid- and/or deep dermis or involving large veins in the subcutis (9).

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