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BI-RADS classification and long-diameter distribution of the masses in the test group
| Long-diameter of the masses | Total | ||||
|---|---|---|---|---|---|
| ≤ 2 cm | 2–5 cm | ≥ 5 cm | |||
| BI-RADS category | 2 | 7 | 5 | 0 | 12 |
| 3 | 158 | 18 | 1 | 177 | |
| 4A | 363 | 141 | 4 | 508 | |
| 4B | 113 | 65 | 2 | 180 | |
| 4C | 42 | 78 | 4 | 124 | |
| 5 | 0 | 4 | 2 | 6 | |
| Total | 683 | 311 | 13 | 1007 | |
