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. 2020 Nov 26;22(3):297–307. doi: 10.3348/kjr.2020.0311

Table 2. Histopathologic Features of 111 Lesions.

Histopathologic Features n (%)
Benign lesions 77 (100)
 Fibrocystic change 13 (16.9)
 Ductectasia 1 (1.3)
 Fibroadenoma 10 (13.0)
 Complex fibroadenoma 1 (1.3)
 Adenosis, other than sclerosing adenosis 4 (5.2)
 Sclerosing adenosis 10 (13.0)
 Atypical apocrine adenosis 1 (1.3)
 Usual ductal hyperplasia 5 (6.5)
 Florid ductal epithelial hyperplasia 5 (6.5)
 Columnar cell change 3 (3.9)
 Intraductal papilloma 11 (14.3)
 Radial scar 3 (3.9)
 Mucocele-like lesion 1 (1.3)
 Atypical ductal hyperplasia 4 (5.2)
 Atypical lobular hyperplasia 2 (2.6)
Lobular carcinoma in situ 3 (3.9)
Malignant Lesions 34 (100)
 Invasive cancer 16 (47.1)
  Invasive ductal carcinoma 12 (35.3)
  Invasive lobular carcinoma 4 (11.8)
 Ductal carcinoma in situ 18 (52.9)