Primary cutaneous follicle center lymphoma is a type of lymphoma.[1] It was recognized as a distinct disease entity in the 2008 WHO classification.[2]: 218 PCFCL had been previously conceived as a variant of follicular lymphoma (FL).[2]: 218
The clinical presentation for Primary cutaneous follicle center lymphoma is erythematous papules, plaques, and (or) tumors. This is usual on the trunk or forehead[3]
Unlike FL, PCFCL is not typically associated with t(14;18) translocation[2]: 218 although presence of that translocation does not exclude PCFCL.[2]: 314 It is usually not associated with overexpressed Bcl-2.[2]: 218
Surgical removal and/or radiotherapy is given for localized disease.[2]: 314 [7] Radiation using multiple radiation fields is given if the disease has wider extent with grouped lesions.[2]: 314 [4][6][7] For the less common situation of more extensive disease (still confined to skin), rituximab without chemotherapy is used.[2]: 314 [4][6][7] Intralesional interferon alpha (IFN-α)[8] and intralesional rituximab have been used.[2]: 314 [8] Approximately one-third of PCFCL relapse, usually in the skin; treatment is similar to initial management[7] and overall survival remains excellent.[9]
Spread from the skin is unusual, and the prognosis is excellent[2]: 218 with a 5-year survival of over 97%.[2]: 314 The International Extranodal Lymphoma Study Group identified elevated LDH, more than two skin lesions, and nodular lesions as three prognostic factors, that are used to assess a cutaneous lymphoma international prognostic index (CLIPI), which is prognostic of disease-free status.[7]
↑ 8.08.1Senff NJ, Noordijk EM, Kim YH, et al. (2008). "European Organization for Research and Treatment of Cancer and International Society for Cutaneous Lymphoma consensus recommendations for the management of cutaneous B-cell lymphomas". Blood. 112 (5): 1600–9. doi:10.1182/blood-2008-04-152850. PMID18567836.
↑Suárez AL, Querfeld C, Horwitz S, et al. (2013). "Primary cutaneous B-cell lymphomas: part II. Therapy and future directions". J. Am. Acad. Dermatol. 69 (3): 343.e1–11, quiz 355–6. doi:10.1016/j.jaad.2013.06.011. PMID23957985.