In reply to Keelan McNulty:
You are correct, no issues (now that you have had presumably curative surgery).
Whilst I'm not your doctor, there is no medical reason (on the basis of the information above) to advise against a trip to the alps.
You may need to advise your travel insurers (BMC or Snowcard etc) that you have had a previous primary spontaneous pneumothorax, that has had curative treatment in the form of (I'm assuming) a video assisted thoracoscopic pleurodesis, and have subsequently been discharged from follow up.
They are unlikely to place any restrictions on your insurance (and if they do call and ask them politely why they are placing restrictions on an inactive medical problem that has been demonstrably cured).
You still won't be allowed to be professional diver however
Happy to discuss by pm if you wish. Whilst I'm not your doctor (and so have no legal responsibility for the above advice) then this is the advice I have given previously in this situation and it is the accepted standard.
Cheers
Ben
(Consultant respiratory physician)