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Pre-sacral chloroma with rectal infiltration. (a, b) Contrast-enhanced CT and contrast-enhanced MRI images of a 5-year-old male with leukaemia with constipation showing large enhancing pre-sacral deposit (arrows) which is anteriorly displacing and infiltrating the rectum, no bone erosion (c) Follow-up MRI after 30 days showed near-complete resolution of the deposit.
