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A 6-year-old boy presented with pain due to large masses over the dorsal aspects of both elbows and right knee. The lesions first appeared at 1 year of age and gradually increased in size over a period of 5 years to their present size, 6×5×5 cm, 6×5×3 cm (over the dorsum of the right and left elbows, respectively) and 2.5×2×0.5 cm (near extensor …
Contributors AK: framing of manuscript and review of literature. LS: critical review and histopathology reporting. AA: treating surgeon.
Competing interests None declared.
Provenance and peer review Not commissioned; externally peer reviewed.
Patient consent for publication Parental/guardian consent obtained.
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