Cutaneous T-cell lymphomas other than mycosis fungoides: Unusual clinical and pathologic presentations: a report of the 2023 SH-EA4HP Lymphoma Workshop (session 4).

Thirty-two cases of cutaneous T-cell lymphoma other than mycosis fungoides were discussed at the 2023 Society of Hematopathology-European Association for Haematopathology Workshop, held November 9-11, 2023, in Houston, Texas. This session focused on diagnostically challenging rare clinical and pathologic presentations with an overrepresentation of cytotoxic cutaneous lymphomas. The variety of challenging cases reviewed in the session highlights the shortfalls of our present cutaneous lymphoma classification and provides a rich learning experience for future classification updates. Many of the cases reviewed revealed a broad and often surprising mutational profile that will contribute to more precise and molecularly relevant future classification as well as (possibly) therapeutic approaches.