B cell acute lymphoblastic leukaemia presenting with isolated soft tissue tumours: the non-myeloid sarcoma.

Soft tissue leukaemic masses are a well-described clinical feature of myeloid haematological neoplasms. In paediatric acute lymphoblastic leukaemia (ALL), such soft tissue leukaemic sarcomas have not been reported as a presenting feature. Here we report a 3-year-old boy with ALL who presented to us with isolated soft tissue swellings for a duration of 9 months. The significance of these 'non-myeloid' sarcomas in paediatric ALL is uncertain.