This appears to be a small blood-blister. If superficial it should resolve on it's own but it is always best to be assessed in person.
Problem post breast implant
Hi, I am sorry to hear of your problem. Its best to show the spot to your PS especially given that you have already needed an operation for the hematoma evacuation. warm regards Dr Prashant Murugkar
If everything is healing and you have no other issues I would keep an eye on this and show your PS. I doubt this represents a problem but your PS needs to advise you.
Spot on breast
It does not look like much but if concerned, it is worth reviewing with your surgeon . Best of luck...
Mark on breast
It does not look too concerning from your photos. Likely a blister from tape or such. But, have your plastic surgeon look at it to be sure, because no opinion online can equate with an in-person examination.
Best of luck!
Board-Certified Plastic Surgeon
Newtown Square/Philadelphia, PA