| • | T-Cell Receptor gene rearrangement: |
| • | CTPL (10-19% are clonal) |
| • | CTCL (up to 90% are clonal) |
| • | CTPL (compared with CBPL) = a more heterogenous group, and in most cases the cause is known (e.g. drug, contact, bite, light (i.e. actinic reticuloid) |
a heterogenous group:
|