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A 5-year-old Japanese girl presented with a 3-year history of a brownish, rough-surfaced, elastic nodule along the spine (figure 1). She was healthy and without any history of trauma such as prolonged bicycle riding or hard-chair sitting. MRI and physical examination revealed no musculoskeletal or neurological abnormalities such as sharply angulated joints. We considered human tail, coccygeal pad, meningioma and spina bifida. Of …
Contributors YY and HI saw the patient, and YY, HI and HS wrote the manuscript. All three authors approved the final version of the manuscript.
Competing interests None declared.
Patient consent Obtained.
Provenance and peer review Not commissioned; externally peer reviewed.
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