I don't speak with any great knowledge of the matter - but I would ask my AME for his view. The way I read CAP 804:
MED.A.20 Decrease in medical fitness
...
(b) In addition, licence holders shall, without undue delay, seek aero-medical advice when they:
(1) have undergone a surgical operation or invasive procedure;
...
(c) In these cases:
(1) holders of class 1 and class 2 medical certificates shall seek the advice of an AeMC or AME. The AeMC or AME shall assess the medical fitness of the licence holder and decide whether they are fit to resume the exercise of their privileges;
...
is that all you need is for any AME to say you're fit to return to flying.
OC619