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Table 1 Pathologic results after surgical excision according to clinical, radiological and histological variables.

From: Predictive factors for breast cancer in patients diagnosed atypical ductal hyperplasia at core needle biopsy

   Pathology after excision Underestimation rate (22.2%) P value (Chi-square)
   Benign (n = 35) Malignancy (n = 10)   
Age (years) < 50 28 (80%) 3 (30%) 9.7% 0.003
  ≥50 7 (20%) 7 (70%) 50%  
Mass on MMG Yes 10 (32.3%) 4 (50%) 28.6% 0.351
  No 21 (67.7%) 4 (50%) 16%  
MIC on MMG Yes 8 (25.8%) 4 (50%) 33.3% 0.186
  No 23 (74.2%) 4 (50%) 14.8%  
Mass + MIC on MMG Yes 1 (3.1%) 2 (22.2%) 66.7% 0.52
  No 31 (96.9%) 7 (77.8%) 18.4%  
Lesion size ≤1 cm 23 (69.7%) 3 (30%) 11.5% 0.024
  > 1 cm 10 (30.3%) 7 (70%) 41.2%  
Mass on USG Yes 27 (77.1%) 9 (90%) 25% 0.370
  No 8 (22.9%) 1 (0%) 11.1%  
MIC USG Yes 2 (5.7%) 3 (30%) 60% 0.031
  No 33 (94.3%) 7 (70%) 17.5%  
Mass + MIC on USG Yes 1 (2.9%) 3 (30%) 75% 0.008
  No 34 (97.1%) 7 (70%) 17.1%  
Needle size 14 Gauge 30 (85.7%) 9 (90%) 23.1% 0.725
  11 Gauge 5 (14.3%) 1 (0%) 16.7%  
Number of Cores ≤ 5 30 (85.7%) 8 (80%) 21.1% 0.660
  > 5 5 (14.3%) 2 (20%) 28.6%  
  1. MMG: mammogram, MIC: microcalcification, USG: ultrasonography