Thank you for the question. Drainage 2 years after any surgical procedure should be investigated as it is highly unusual and indicative of some type of delayed healing. Depending on where the issue is and how it has progressed as well as the potential source of the problem will determine what will need to be done. I encourage you to see your plastic surgeon or another plastic surgeon and get evaluated.
All the best,
Dr Remus Repta
Web reference: http://aaaplasticsurgery.com