“…In fact, although it is obvious that it is less aggressive than the ALK -form, its course is nevertheless quite variable, being influenced by several factors: the age of the patient, the International Prognostic Index (IPI; a clinical tool developed to aid in predicting the prognosis of patients with aggressive non-Hodgkin lymphoma, and based on age, disease stage, serum lactic dehydrogenase (LDH), performance status, and presence of extranodal disease) and the state of the bone marrow. In addition, the prognosis of ALK + ALCL may soon be improved by the recent introduction of ALK inhibitors and SGN-35 in the clinical practice (67,68).…”