"ALK-positive anaplastic large-cell lymphoma"
"ALK-negative anaplastic large-cell lymphoma"
"ALK+ ALCL is most commonly encountered in children, adolescents and young adults (median age 30 years). It is rare, accounting for only 3% of adult non-hodgkin lymphomas 4."
"In contrast, ALK- ALCL are typically encountered in older adults (median age 54 years)."
"In the majority of ALK+ ALCL cases, lymph nodes are involved (90%), with extranodal involvement fairly commonly encountered, most commonly of skin, soft tissues, bone, and lung 4."
"In contrast, ALK- ALCL cases are more commonly extranodal with approximately half of patients presenting with a single site of disease 5. Soft tissues, breast, liver, bone, mediastinum, and gastrointestinal tract are encountered 5."
"Both ALK+ and ALK- ALCL are rare in the central nervous system, most commonly presenting as one or more masses of the supratentorial parenchyma. Involvement of the posterior fossa is less common. Spinal cord, meningeal or skull involvement is rare 3."
"Both ALK+ and ALK- ALCL are rare in the central nervous system, most commonly presenting as one or more masses of the supratentorial parenchyma. Involvement of the posterior fossa is less common. Spinal cord, meningeal or skull involvement is rare 3."
"ALK+ tumours demonstrate anaplastic lymphoma kinase (ALK) gene rearrangements, and are positive for EMA 3."
"DUSP22 rearrangement"
"ALK+ ALCL is most commonly encountered in children, adolescents and young adults (median age 30 years). It is rare, accounting for only 3% of adult non-hodgkin lymphomas 4."
"Both ALK+ and ALK- ALCL are rare in the central nervous system, most commonly presenting as one or more masses of the supratentorial parenchyma. Involvement of the posterior fossa is less common. Spinal cord, meningeal or skull involvement is rare 3."
"In the majority of ALK+ ALCL cases, lymph nodes are involved (90%), with extranodal involvement fairly commonly encountered, most commonly of skin, soft tissues, bone, and lung 4."
"Treatment is primarily with chemotherapy; allogeneic transplant is reserved for cases that do not respond 4."