Is it normal to have delayed bruising after latissimus dorsi flap breast surgery?

I would suggest that you call your doctor's office and ask for an appointment to be seen.  In the presence of previous radiation, infection problems can be more common but redness without infection can also be more common.  You haven't mentioned anything about symptoms of pain, fever or chills but in the face of previous radiation and now an implant, I would suggest being abundantly cautious and making sure that your surgeon knows what's going on.  Best of luck!

Delayed bruising is a common part of any procedure, and this is especially true of a latissimus flap where there is a fair amount of dead space from the flap harvest and transfer. However, it could also be a sign of a hematoma or other fluid collection, therefore I would recommend making your treating surgeon aware and having him or her check it out specifically.

Thank you for the question.  The LD flap is a great and powerful tool in reconstructive surgery.  The changes that you are describing can happen but would follow up with your plastic surgeon to make sure you don't have a fluid collection on your back.  Best of luck.