Pseudolymphomes cutanés et pseudoclonalité des infiltrats lymphoïdes.

Cutaneous pseudolymphomas represent an heterogeneous group of tumours resembling lymphomas by some clinical and histological aspects. They are distinguished, in particular, by their benign evolution. The histological and immunohistological examinations combined with molecular biology help to elucidate any diagnostic uncertainty. In these diseases, monoclonality and pseudoclonality must be distinguished in the lymphoid infiltrates. Searching for any specific etiology is important because removing the cause is likely to clear the lesions.