Could a tumor have grown in my breast implant after my mastectomy to cause my implant to pop? the implant suddenly appeared flat and causes pain.

Need to see your MD: If is saline implant may have leaked out, see your doctor first for recurrence of tumor and possible replacement of the implant , do not worry they do not pop out.

Not Likely: All implants break eventually. At your age it's hard to imagine a tumor. Go back to your surgeon for a check and replacement as soon as possible. The scar that normally forms around the implant gets smaller with time after rupture and makes replacement harder.

C Surgeon: It is most likely that you are experiencing breast implant leakage, unrelated and separate from any type of tumor growth. For accurate diagnosis and treatment recommendations see your plastic surgeon. Best wishes.

Deflation: Sounds like you have a deflation of a saline implant. This is usually related to a crack in the implant wall, and has nothing at all to do with any breast cancer tumor recurrence. See your plastic surgeon for an implant replacement.