Table 1

- Baseline characteristics of the studied sample (N=247).

Variablesn (%)
Age (years), mean±SD44.47±14.35
Age (years), median (IQR)44.5 (35.0-54.0)
Ultrasound
Yes246 (99.6)
No1 (0.4)
Mammography
Yes197 (79.8)
No50 (20.2)
Affected side
Left127 (51.4)
Right120 (48.6)
Lesion size (cm), mean±SD2.25±1.80
Lesion size (cm), median (IQR)1.5 (1.0-2.8)
Pathology
Benign199 (80.6)
Malignant41 (16.6)
Hyperplasia7 (2.8)
Imaging findings
Mass164 (66.4)
Mass with calcification14 (5.7)
Calcification only5 (2.0)
Asymmetry39 (15.8)
Architectural distortion26 (10.5)
Intraductal mass37 (15.0)
Complex mass18 (7.3)
Skin thickening6 (2.4)
Nipple retraction2 (0.8)
Mammography breast density (n=197)
A28 (14.4)
B84 (43.0)
C75 (38.5)
D8 (4.1)
Lesion location
Retroareolar57 (23.1)
Upper outer quadrant133 (53.8)
Lower outer quadrant22 (8.9)
Upper inner quadrant20 (8.1)
Lower inner quadrant15 (6.1)

Values are presented as numbers and percentages (%), or mean ± standard deviation (SD), or median interquartile range (IQR).