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Distribution of Hyperplastic diagnosis by year of diagnosis
| Diagnosis | ||||
|---|---|---|---|---|
| Year | Neoplastic | Hyperplastic | Mixed or others | Total |
| 1959–1970 | 90 (92.8) | 0 | 7 (7.2) | 97 (100) |
| 1971–1979 | 178(96.7) | 0 | 6(3.3) | 184(100) |
| 1980–1989 | 813(97.5) | 1(0.1) | 22(2.6) | 836(100) |
| 1990–1999 | 1266(91.0) | 50(3.6) | 75(5.4) | 1391(100) |
| 2000–2006 | 1859(74.2) | 482(19.2) | 164(6.5) | 2505(100) |
| Total | 4206(83.9) | 533(10.6) | 274(5.5) | 5013(100) |
