Eccentric lesion in lateral aspect of distal tibial diametaphysis. Lesion has sharply demarcated lobulated border, expands cortex mildly but does not violate its border or cause periosteal reaction. Intermediate T1 signal intensity (SI) and very low T2 SI; no contrast enhancement.
Characteristics of a benign lesion, most probably a healing non-ossifying fibroma (NOF).
At lower edge of scan, tiny structure in the tibiotalar joint, devoid of signal on all sequences - probably a loose body.