According to the World Health Organization (WHO)–European Organization for Research and Treatment of Cancer (EORTC) classification system for cutaneous lymphomas and the WHO classification system for tumors of hematopoietic and lymphoid tissues, GSS is included as a variant or subtype of mycosis fungoides.1,2 We agree that the use of TNM may be difficult for unusual and rare variants of mycosis fungoides; however, neither the initial TNM classification in its classic scheme nor the staging system recently proposed by the International Society for Cutaneous Lymphomas–EORTC restricts its use to the classic mycosis fungoides or explicitly excludes mycosis fungoides variants.3,4
Kempf W. “Cutaneous T-Cell Lymphoma”: Cutaneous TNMania in Cutaneous Lymphomas—Reply. Arch Dermatol. 2009;145(7):843. doi:10.1001/archdermatol.2009.136
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