A case of primary cutaneous natural killer/T-cell lymphoma, nasal type, with indolent clinical course: monoclonal expansion of Epstein–Barr virus genome correlating with the terminal aggressive behaviour.
A letter to the editor is presented reporting a case of primary cutaneous natural killer/T-cell lymphoma-nasal type showing an indolent clinical course and the monoclonal expansion of the Epstein-Barr virus genome.