<unk> s represent a heterogeneous group of diseases characterized by solitary or multiple dermal or subcutaneous nodules. Lymphomas included in this group are: :*<unk><unk>  immunocytoma :*<unk> <unk>  B-cell lymphoma :* Mucosa-associated lymphoid tissue lymphoma
Primary cutaneous marginal zone lymphoma
Primary cutaneous follicle center lymphoma
Primary cutaneous immunocytoma
Cutaneous T cell lymphoma
Secondary cutaneous CD30+ large-cell lymphoma
Cutaneous B-cell lymphoma
Chronic multifocal Langerhans cell histiocytosis
Generalized eruptive histiocytoma