Table 1.

Comparison of age, mammographic density, histological and imaging sizes between two groups (MRI+ and MRI−)

	MRI (n = 36)	No MRI (n = 61)	p-value
Age (years)	59.4	71.8	0.004
Density categories (A and B)	5	47	0.009
Density categories (C and D)	31	14	0.003
Mean histological size, mm (±2SD)	41.9 (±32.5)	43.6 (±30.2)	0.750
Mean mammographic size, mm (±2SD)	17.3 (±12.6)	32.7 (±20.2)	0.004
Mean ultrasound size, mm (±2SD)	16.9 (±9.9)	23.2 (±10.8)	0.008
Mean MRI size, mm (±2SD)	30 (±17.5)	–	–

SD, standard deviation.