Background: Although textured implants represent fewer than 10% of implants used in the United States, the country reports the highest incidence of breast implant-associated anaplastic large cell lymphoma (BIA-ALCL).

Objectives: The aim of this study was to perform a systematic literature review on US-based epidemiology to update knowledge on BIA-ALCL in the United States.

Methods: Publications on US BIA-ALCL epidemiology were searched between September 2022 and March 2023 on MEDLINE (National Institutes of Health; Bethesda, MD), Embase (Elsevier, Amsterdam, the Netherlands), Web of Science (Clarivate, London, UK), and SCOPUS (Elsevier, Amsterdam, the Netherlands). The US numerator was obtained by averaging the FDA MAUDE database and the PSF PROFILE registry, while the denominator was estimated from chest X-rays, and included female transgender individuals. Prevalence and risk were assessed accordingly, but the incidence rate (IR) could not be updated due to the lack of available follow-up data.

Results: Out of 987 identified manuscripts, 10 were included. The US prevalence of BIA-ALCL in the literature ranged from 1:300 to 1:500,000 and the IR from 4.5 per 10,000 to 31.1 per 100 million persons per year. A mean value of 453.5 BIA-ALCL cases was calculated. From a denominator of 4,264,618 individuals, which includes all breast implant surfaces, we calculated 414,521 individuals with textured implants, indicating a textured prevalence of 109.4 cases per 100,000 individuals and a risk of 1:913.

Conclusions: BIA-ALCL IR, prevalence, and risk has increased when calculated exclusively for patients with textured devices. Although US macrotextured implants were recalled by the FDA, these findings may influence the surveillance of existing patients and the use of macrotextured implants in other parts of the world where they remain widespread.

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Source
http://dx.doi.org/10.1093/asj/sjad279DOI Listing

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