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. 2018 May 2;44(9):1174–1182. doi: 10.1097/DSS.0000000000001531

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Copyright © 2018 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the American Society for Dermatologic Surgery, Inc.

This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.

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Figure 1. — Categories of foreign body reactions to injected silicone. Category 1: No visible reaction. Category 2: Mild reaction with a few inflammatory cells. Category 3: Inflammatory cells and one or 2 giant cells. Category 4: Inflammatory cells and more than 2 giant cells. Less than 50% of the area is fibrotic. Category 5: Inflammatory cells and more than 2 giant cells. Less than 50% of the area is fibrotic. Category 6: Inflammatory cells and one giant cell. Less than 50% of the area is fibrotic. Category 7: Less than 50% of the area is fibrotic. No giant cells. Category 8: Less than 50% of the area is fibrotic. No giant cells.