Extramedullary myeloid cell tumour: presentation as anterior chest wall mass during AML relapse

Acute myeloid leukaemia is an uncommon but an important cause of soft tissu e swellings. Such extrameningeal, extramedullary leukaemic infiltrates are called extramedullary myeloid cell tumours. Despite their large size they m ay respond well to chemotherapy and local radiotherapy, as is demonstrated in this case.