Hi, thanks for writing to HCM.
Any swelling of prolonged duration warrants evaluation.
An xray of the involved area is needed to know whether the swelling is arising from the bone. An MRI
scan will show the extent of the lesion and any associated pathology.
An open biopsy
is needed to know the histological diagnosis.
I suggest you to consult your treating doctor for a detailed evaluation and further management.
Hope this information is helpful. Good day