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Frequency of targeted areas included in tissue microarray
| Target area | Frequency | Percent (%) |
|---|---|---|
| Normal TDLUs | 361 | 62.8 |
| Usual ductal hyperplasia (UDH) | 139 | 24.2 |
| Atypical ductal hyperplasia (ADH) | 50 | 8.7 |
| Atypical lobular hyperplasia (ALH) | 25 | 4.3 |
| Total | 575 | 100.0 |
TDLUs=terminal duct lobular units
