type that are restricted to the dermal or epidermal region and are without any signs of systemic lymphoma. Most skin non-Hodgkin’s lymphomas (NHL) originate from T cells, and primary cutaneous diffuse large B cell lymphomas (PCDLBCLs) are uncommon (1). PCDLBCLs appear clinically as non-specific multiple palpable nodules or plaques in the subcutaneous tissue (2). PCDLBCLs localized in the head a...

Background: The aim of this study was to define prognostic parameters and guidelines for diagnosis and treatment for CD56+ hematological neoplasms with first presentation in the skin. Patients and methods: The study group included 153 cases (23 new and 130 from the literature). According to the World Health Organization classification, the group included 15 nasal and 38 nasaltype natural killer...