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Table 1 Patients’ characteristics

From: Limitations of mammography in the diagnosis of breast diseases compared with ultrasonography: a single-center retrospective analysis of 274 cases

Characteristics N (%)
Age  
 ≤45 129 (47.1)
 >45 145 (52.9)
Menstrual status  
 Premenopausal 185 (67.5)
 Postmenopausal 89 (32.5)
Pathology  
 IDC 120 (43.8)
 DCIS 7 (2.6)
 Fibroadenoma 47 (17.2)
 Papilloma 9 (3.3)
 Adenosis 50 (18.2)
 Inflammation 14 (5)
 Lipomyma 7 (2.6)
 Cyst 8 (2.9)
 Others (malignant) 5 (1.8)
 Others (benign) 7 (2.6)
Lesion size (cm)  
 ≤2 122 (44.5)
 2.1 to 5 135 (49.3)
 >5 17 (6.2)
Breast Density  
 ACR1 41 (15)
 ACR2 92 (33.6)
 ACR3 127 (46.3)
 ACR4 14 (5.1)
Breast Volume (ml)  
 ≤400 120 (43.8)
 400 to 800 142 (51.8)
 >800 12 (4.4)
  1. ACR. American College of Radiology; DCIS, ductal carcinoma in situ; IDC, invasive ductal carcinoma.