A well-thriving male toddler presented with a painless swelling on the dorsal surface of his right hand, incidentally noticed by the mother. There was no history of local trauma or any systemic symptoms. On examination, there were no signs of inflammation over the swelling. An X-ray was taken, and an expansile lytic lesion of the right fifth metacarpal bone was seen. He underwent debridement, and the tissue was sent for histopathological examination (HPE) and cartridge-based nucleic acid amplification test (CBNAAT) for