Natural Killer Cell Activity Test Helps to Suspect Aggressive Natural Killer Cell Leukemia - Diagnostic Challenge.
Int J Med Sci
; 20(2): 206-210, 2023.
Article
em En
| MEDLINE
| ID: mdl-36794163
ABSTRACT
Aggressive natural killer cell leukemia (ANKL) is a rare disease with an aggressive clinical course. We aimed to assess the clinicopathological characteristics of the difficult to diagnose ANKL. During ten years, nine patients with ANKL were diagnosed. All the patients exhibited aggressive clinical course and underwent the BM study to rule out lymphoma and hemophagocytic lymphohistiocytosis (HLH). BM examination showed varying degrees of infiltration of neoplastic cells, which were mainly positive for CD2, CD56, cytoplasmic CD3 and EBV in situ hybridization. Five BM aspirates showed histiocytic proliferation with active heomphagocytosis. Normal or increased NK cell activity test results were obtained from 3 patients who were available for testing. Four had multiple BM studies until diagnosis. An aggressive clinical course and positive EBV in situ hybridization, often with associated secondary HLH, should raise the suspicion of an ANKL. Conducting additional supplementary tests such as NK cell activity and NK cell proportion would be helpful for the diagnosis of ANKL.
Palavras-chave
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Leucemia Linfocítica Granular Grande
/
Linfoma
Tipo de estudo:
Diagnostic_studies
Limite:
Humans
Idioma:
En
Revista:
Int J Med Sci
Assunto da revista:
MEDICINA
Ano de publicação:
2023
Tipo de documento:
Article