Robert Whitfield MDAmerica's Breast Implant Illness Expert™

Biofilm and Capsular Contracture: 29% of What?

7 Sept 2026 · 1 min

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In this brief educational segment, Dr. Robert Whitfield clarifies a commonly cited statistic that biofilm is found in 29% of breast implant cases. He explains that the figure comes from 203 positive microbial findings out of 694 explant capsule tissue samples, not from 694 patients, and that the data derive from a retrospective, selected explant population. Consequently, the 29% rate should not be generalized to all breast implant recipients. Dr. Whitfield notes he will present a detailed guide on how to read this number accurately and without alarm in a forthcoming session.

When discussing biofilm and capsular contracture, you may hear this study summarized as 29% positive, but the denominator matters. We evaluated 694 submitted explant capsule tissue samples, not 694 patients, and 203 samples had positive microbial findings. This was a retrospective selected explant population, so the result should not be treated as the rate for everyone with breast implants. On Thursday, I will show you how to read that number accurately and without alarm.