[Unilocular cutaneous lymphoma : the hand and the blade].

Mycosis fungoides (MF) is the most frequent form of cutaneous lymphomas. MF is known as the great mimicker. The tumour d'emblee form is an exceptional presentation, for which there is no precise treatment guidance. A 45-year old man presented with tumoral MF on the dorsal side of his right hand with an extension to the forefinger. After the histological, immunohistological and the TCR monoclonality proof of MF, different topical and systemic treatments have been administered. As none of these treatments provided satisfying clinical responses, a surgical excision was finally proposed, with a very good clinical outcome and no recurrence observed after 2 months. Although exceptional in the event of an MF in general, localized tumoral forms of MF could readily benefit from a surgical excision.