How do you guys handle patients going for 2nd opinion behind your back?

[watchf]

I realise there are a quite a number of members here who are frontline clinicians hence I put forward this question;

How do you (in your practice) deal with patients seeking 2nd opinion behind your back and subsequently have the clinician who did the 2nd opinion get back to you and agreed with your treatment who then request you to continue the care of this patient? In the whole process the patient never did inform you that they had seek or planning to seek a 2nd opinion.

What would your reaction/thoughts be if the clinician who provided the 2nd opinion is extremely junior in terms of experience in your field telling you (an experienced senior practitioner) that after going through your clinical management of the patient found that it is appropriate?

Just to clarify, I intentionally used the term clinicians instead of a specific health profession so as to include all frontline health clinicians.

Addition: I'm not saying if its right or wrong, what I am asking is what your management plan would be after that. Would you in your normal practice resume management of the patient or would you rather transfer the care to the clinician who provided the 2nd opinion (the last clinician whom had contact with the patient) since trust between the clinician patient relationship is lacking and would not lead to an optimal outcome under your care?