Fig. 2

Tumor-to-dermis distance of cases with skin preservation (NSM/SSM) was significantly less than that of cases with skin resection (Bt) (3.8 ± 2.7 mm vs 5.2 ± 2.4 mm). By contrast, in cases with invasive carcinoma, 28 out of 78 cases in which Bt was performed (35.9%) had a tumor-to-dermis less than 2 mm, whereas 3 of the 63 cases upon which NSM/SSM was performed (4.8%) had a tumor-to-dermis distance less than 2 mm. In the 3 cases in which the tumor-to-dermis distance was less than 2 mm, the skin immediately overlying the tumor was resected