Table 1.
Characteristics of patients and lesions.
| Characteristic | All lesions (n=398) | Lesions≤2 cm (n=250) | Lesions>2 cm (n=148) | ||||
| Patient age (years) |
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Mean (SD) | 43.10 (12.57) | 43.62 (11.875) | 42.22 (13.66) | |||
|
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Median (range) | 45 (17-70) | 45.0 (17-70) | 44.5 (17-70) | |||
| Size of all lesions (cm) |
|
|
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||||
|
|
Mean (SD) | 1.92 (1.26) | 1.1629 (0.42) | 3.1876 (1.19) | |||
|
|
Median (range) | 1.6 (0.26-9.5) | 1.1 (0.26-2.0) | 2.8 (2.1-9.5) | |||
| Size of malignant lesions (cm) |
|
|
|
||||
|
|
Mean (SD) | 2.22 (1.08) | 1.331 (0.42) | 3.02 (0.82) | |||
|
|
Median (range) | 2.11 (0.26-6.2) | 1.30 (0.26-2.0) | 2.8 (2.1-6.2) | |||
| Size of benign lesions (cm) |
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|
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|
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Mean (SD) | 1.73 (1.33) | 1.10 (0.40) | 3.38 (1.50) | |||
|
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Median (range) | 1.3 (0.4-9.5) | 1.0 (0.4-2.0) | 2.9 (2.1-9.5) | |||
| Histologic type of malignant lesions, n (%) |
|
|
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|
|
Total | 150 (37.7) | 71 (47.3) | 79 (52.7) | |||
|
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Intraductal carcinoma in situ | 5 (3.3) | 5 (7.0) | 0 (0.0) | |||
|
|
Invasive lobular carcinoma | 11 (7.3) | 10 (14.1) | 1 (1.3) | |||
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Mucinous adenocarcinoma | 2 (1.3) | 2 (2.8) | 0 (0.0) | |||
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|
Medullary carcinoma | 2 (1.3) | 1 (1.4) | 1 (1.3) | |||
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Invasive ductal carcinoma | 130 (86.7) | 53 (74.6) | 77 (97.5) | |||
| Histological type of benign lesions, n (%) |
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|
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|
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Total | 248 (62.3) | 179 (72.2) | 69 (27.8) | |||
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Intraductal papilloma | 29 (11.7) | 29 (16.2) | 0 (0.0) | |||
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Granulomatous mastitis | 5 (2.0) | 1 (0.6) | 4 (5.8) | |||
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Fibroma | 171 (69.0) | 110 (61.5) | 61 (88.4) | |||
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Hyperplasia-induced lesions | 42 (16.9) | 38 (21.2) | 4 (5.8) | |||
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Scar tissue | 1 (0.4) | 1 (0.6) | 0 (0.0) | |||