JAAD Supplemental Material -Sports bras improve chest keloids but outcomes are dependent on breast size: a retrospective analysis

Supplemental Figure S1.The design and implementation of this study. Supplemental Figure S2. Effect of sports bras for female patients with different breast size on keloid score of prethoracic keloid treatment . (a) The keloid scores in without sports bra group were significantly worse than those with sports bras group at 1 year following up. (b-c) The large breast size group (BSS＜7.7) showed more significant improvement of keloid score when patient wore sports bras than the small breast size group (BSS＞7.7). (d) Larger size of the breast was correlated to the worse keloid score in both two groups according to simple Linear Regression. However, the positive association in without sports bra group were stronger compared to with sports bra group. Supplemental Figure S3. The clinical photos of three patients who strictly worn sports bras 20 hours a day for 6 months. （Left：before treatment; Right: 1 year after operation) Supplemental Figure S4. The typical pathological features of one of included patients. The skin biopsy was completed for every patient and revealed the typical broad, hyalinized, eosinophilic “bubble gum” collagen fibers for a diagnosis of keloid.