Fig. 3

Violin plots comparing the distribution of collagen prognostic index parameters between pure DCIS and DCIS coexisting with invasive carcinoma (mixed DCIS). Obviously, DCIS mixed showed higher angle of directionality and lower dispersion degree than pure DCIS. No statistically significant difference between collagen density between pure and mixed DCIS. Central line in the boxplot represents the median while the error bars represent the standard deviation. DCIS ductal carcinoma in situ