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The spinal cord shows normal calibre and signal intensity but extends abnormally low, reaching down to the level of L5. Between L2/3 and S1, a fatty mass is shown dorsal to the distal cord and contiguous with subcutaneous fat through a bony defect posteriorly. The mass extends over a distance of 5.6 cm craniocaudal. Superiorly, it is a little more prominent to the right of the cord than to the left. The fatty mass-neural placode interface is within the spinal canal.