This is 10 year old girl, with right knee pain radiating to the calf with associated swelling for one week duration referred to her general practitioner. X-ray of the leg was requested which showed lytic lesion with septations and sclerotic margins, in the shaft of the right tibia measuring more than three centimeters indicating NOF which resembles the larger version of FCD. This lesion also shows cortical expansion on lateral view as it is arising posteriorly with no evidence of cortical break which indicates benign or slow-growing pathologies as seen in this case.