Fig. 2
From: Risk factors for distant metastasis of dermatofibrosarcoma protuberans
a Survival rates of DFSP-O and DFSP-FS. The 5-year cumulative survival rates were 100 % for O-DFSP and 25.7 % for FS-DFSP in our cases, and as also reported by others, the prognosis of FS-DFSP was significantly poor (p < 0.0001, log-rank test). b Comparison of survival rates between tumors less than 10 cm versus 10 cm or larger. Comparing cases with and without metastasis, cases with metastasis had significantly larger tumor diameter and worse prognosis (p < 0.0001, log-rank test)