Summary

Epidural sacral nerve compression as an initial feature of leukaemia is a rare complication. The findings in a 16-year-old boy who presented to an emergency department with symptoms of faecal incontinence are reported herein. Radiological imaging demonstrated soft tissue masses in the sacral epidural space. The diagnosis of acute myeloid leukaemia was confirmed on bone marrow aspirate. The characteristics and management of extramedullary leukaemia are discussed.