So-called Ganglia are cysts containing synovial fluid (the fluid that lubricates joints and tendons) and they arise in association with joints and tendons. They are most common around the wrist and in the fingers. They are often cause more nuisance than pain. They can be removed surgically. There is a 10% recurrence rate.
It is rare for the symptoms of carpal tunnel syndrome not to resolve completely – other than residual numbness if the condition has been allowed to progress too far. Severe cases may have paralysis of the muscles at the base of the thumb so that you can no longer lift it out of the plane of the palm.
In severe cases this paralysis may not recover. Very rarely a tender point (neuroma) develops in the scar at the base of the palm This can usually be fixed by excision of the scar at the tender point. The risk of nerve injury is exceedingly small.
out of town?
Ideally a consultation should be face to face but is certainly possible to arrange a telephone consultation. If you can email the photos first so much the better. If it is clear what procedure is required then the in-person consultation can be the day before or the morning of the surgery.