Cutaneous pseudolymphomas refer to a group of lymphoproliferative disorders of difficult classification and diagnosis. Considered as very low-grade lymphomas by some authors, they are actually able to progress to overt cutaneous lymphomas in a minority of cases. We report a case of cutaneous pseudolymphoma of the breast in a 21-year old woman which relapsed locally ten years later. The case is of interest for the unusual localisation of the lesion, for its recurrence after such a long period of time, and for the homozonal site of recurrence. The reported features support both the long course and the lymphomatous nature of such lymphocytic proliferations.

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