highly significantp<0.001
In the present study, a post hoc Games-Howell multiple comparison test was applied for comparing combinations of groups constituted by benign, FN/SFN, and malignant categories (Table 4 ), which also showed highly significant results (p<0.001) except for a few insignificant results for roundness (p=0.999), heterogeneity (p=0.904) and clumpiness (p=0.704) within comparative group benign-FN/FSN (Table 4 ).