Hi,
Thanks for writing in.
It is important to consult an
orthopaedic surgeon and get your lump clinically examined. It looks like a benign lump and most likely a
ganglion cyst containing fluid. This is an assumption and the precise diagnosis can be made by our doctor after having seen you. Further investigation like
X ray,
Ultrasound scan or MRI scan might be necessary for better diagnosis.
Hope this helps