Haemophagocytic syndrome triggered by acute lymphoblastic leukaemia with t(9;22)(p24; q11.2).

Haemophagocytic syndrome (HPS) is a rare and potentially life-threatening condition that requires early diagnosis and prompt combined treatment. This case report describes a male patient with HPS, presenting as acute liver failure, that underwent a thorough evaluation for the cause of his symptoms. A final diagnosis of acute lymphoblastic leukaemia was established more than 2 months after the first presenting symptom appeared. Furthermore, the patient had an unusual chromosomal abnormality with a t(9; 22)(p24; q11.2) translocation, but the reciprocal janus kinase 2-breakpoint cluster region (JAK2-BCR) and BCR-JAK2 fusion transcripts were not be amplified.