In reply to Euge:
Yes, I have one about 2.5 cm long, just under 1cm high on the top of my foot, behind little and 4th toe. Podiatrist consultant tried to aspirate it but failed to extract anything other than a drop of plasma. Was amusing watching him first try to squeeze it like a giant zit and then struggle to suck it out with a syringe the size of a small bicycle pump.
Then it was investigated by ultrasound to determine the extent. Quite large was the outcome, larger than the visible dimensions, followed by did I want it removed? Consultant warned that if it was removed, the gap would be filled with scar tissue and potential nerve damage. As I already suffer from Raynauds after nerve damage following a Dupuytrens correction to a little finger, I have just left it. It causes me no problems at all but it is not in an awkward position.
Hope that helps you.
Post edited at 12:42