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Table 3 Additional pathological results excluding the main lesion for cases with changes in the surgical plans based on MRI findings

From: Efficacy of breast MRI for surgical decision in patients with breast cancer: ductal carcinoma in situ versus invasive ductal carcinoma

Additional pathological results (n, %) Ductal carcinoma in situ
(n = 32)
Invasive ductal carcinoma
(n = 88)
P value
Larger tumor size observed on breast MRI vs. breast mammography or ultrasonography 14 (43.8) 49 (55.7) 0.784
 True malignancy 9 (28.1) 32 (36.3)  
 Background of ductal carcinoma in situ (> 5 cm) 27 (30.7)  
 Benign pathologic findings 5 (15.6) 17 (19.3)  
Multiple lymphovascular invasion 6 (6.8)  
Extensive intraductal component 9 (10.2)  
Multifocality 12 (37.5) 20 (22.7) 0.139
Separate nodules with invasive and non-invasive focus 3 (3.4)  
Microcalcification, both in tumor and benign ducts 6 (18.8) 18 (20.5) 0.950
Microcalcification, only in benign ducts 7 (8.0)  
Sclerosing adenosis or fibroadenoma 4 (12.5) 2 (2.3) 0.061
  1. Factors could be duplicated
  2. MRI Magnetic resonance imaging