ABSTRACT

Background 1346 General description 1346 Clinical features 1347 ALK-positive and ALK-negative anaplastic large 1347

cell lymphoma Outcome 1347 Prognostic factors 1347

Primary cutaneous anaplastic large cell lymphoma 1348 Management 1348 Systemic anaplastic large cell lymphoma 1348 Cutaneous anaplastic large cell lymphoma 1349 Targeted therapies 1349 Key points 1350 References 1350

Anaplastic large cell lymphoma (ALCL) was first described 20 years ago as a novel entity characterized by a cohesive growth pattern of neoplastic lymphoid cells with anaplastic features and constant expression of the Ki-1/CD30 antigen.1