Unlike FL, PCFCL is not typically associated with t(14;18) translocation although presence of that translocation does not exclude PCFCL. It is usually not associated with overexpressed Bcl-2. PCFCL represents about 55% to 60% of primary cutaneous B-cell lymphomas (PCBCL); primary cutaneous marginal zone lymphoma and diffuse large B-cell cell lymphoma, leg type are the other primary cutaneous B-cell lymphomas. The cause of PCFCL is unknown.
Primary cutaneous follicle center lymphoma
Primary cutaneous immunocytoma
Cutaneous T cell lymphoma
Primary cutaneous marginal zone lymphoma
Cutaneous B-cell lymphoma
Generalized eruptive histiocytoma
Subcutaneous T-cell lymphoma
Cutaneous lymphoma