Ps: this isn't a discussion on the morals of litigation against the nhs. Just curious as to the figures offered, If at all.
damages for personal injury are in two parts
one for pain suffering loss of amenity (your upset and trauma and ongoing pain if any) - so someone who has a leg injury that fully recovers will get less than someone who will have ongoing pain for 4 years who will get less than someone with pain for life.
the other part is any actual financial losses incurred - so loss of income if you can't work, cost of any equipment or adaptations, cost of any treatment,
so all in all what it is worth depends on what you have left in you and what the long term symptoms will be and how you react to it.
are they recommending surgery to remove it?
or is will the pain resolve and become symptomless?
basically you need to work out what the long term prognosis is, how much it will distress you and work it out from there - but you aren't going to get any precise figures of any use because it will depend on very specific information and a medical report as to your future prognosis.
so if whatever it is causes your mobility to deteriorate so you can't walk that will be worth considerably more than a bit of an ache that resolves in a few years.
it won't help to be told Mr johnson had £1,000 for something left in that caused him no problems or Ms Smith recovered £500,000 because the scaple moved internally, pierced her kidney, left her disabled and so on. every case is different and the damage and long term prognosis is everything.
go and see a medical negligence solicitor