title: Hypereosinophilia syndrome with pneumonia in acute lymphoblastic leukaemia.
abstract: Eosinophilic pneumonia in association with acute lymphoblastic leukaemia (ALL) is very rare. A teenage boy is described with eosinophilic pneumonia which preceded by several months the onset of ALL. Prior to establishment of the diagnosis he had been treated with corticosteroids with a transient response only. This delayed his final diagnosis until there were haematologic features of leukaemia. The leukaemic blasts were cALLA (CD10) positive and had a normal chromosome number with no translocations on banding studies. The pneumonia remitted rapidly when his leukaemia responded to chemotherapy.
mesh_terms: D000293:Adolescent; D002871:Chromosome Banding; D003937:Diagnosis, Differential; D006801:Humans; D007945:Leukemia, Lymphoid / Q000150:complications* / Q000175:diagnosis / Q000235:genetics; D008297:Male; D011657:Pulmonary Eosinophilia / Q000150:complications* / Q000175:diagnosis / Q000235:genetics