title: T-cell leukaemia in a young boy presenting with central nervous system symptoms.
mesh_terms: D002555:Cerebrospinal Fluid / Q000166:cytology; D002675:Child, Preschool; D003937:Diagnosis, Differential; D006801:Humans; D007945:Leukemia, Lymphoid / Q000175:diagnosis*; D008218:Lymphocytosis / Q000175:diagnosis; D008297:Male; D008578:Meninges; D013601:T-Lymphocytes