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Table 3 Description of MRI findings

From: Breast cancer diagnosed before the 40 years: imaging findings and correlation with histology and molecular subtype

MRI findings (n = 107) n %
 Mass 67 62,6
 Mass and non-mass enhancement 21 19,6
 Non-mass enhancement 17 15,9
 Negative findings 2 1,8
Masses (n = 88) n %
 Shape
  Round 3 3,4
  Oval 43 48,9
  Irregular 41 46,6
 Margin
  Circunscribed 8 9,1
  Irregular 54 61,4
  Spiculated 18 20,4
 Internal enhancement
  Homogeneous 11 12,5
  Heterogeneous 58 65.8
  Rim enhancement 14 15,9
 Kinetic curve (n = 60)
  Persistent 4 4,5
  Plateau 21 23,8
  Washout 35 39,8
Non-mass enhancement (n = 38) n %
 Distribution
  Focal 3 7,9
  Linear 15 39,4
  Segmental 10 26,2
  Regional 5 13,1
  Diffuse 1 2,6
  Multiple regions 2 5,3
 Internal enhancement
  Homogeneous 7 18,4
  Heterogeneous 20 52,6
  Clumped 3 7,9
  Cluestered rings 1 2,6
Associated Features n %
 None 52 48,6
 Skin invasion 16 14,9
 Nipple invasion 12 31,6
 Pectoralis muscle invasion 6 15,8
 Axillary adenopathy 37 34,6
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