Table 2.
Retrospective studies regarding incidental discovery
| Ref. | Study period | Patients (n) | Group | Number of patients n (%) | 5-yr PFS rates (%) | P value | Median follow-up time (mo) |
| Cheema et al[18] | 1999-2010 | 143 | Incidental | 56 (40) | 86 | 0.07 | 67 (mean) |
| Non-incidental | 87 (60) | 59 | |||||
| Crippa et al[54] | 1990-2009 | 355 | Incidental | 124 (35) | 83 | < 0.001 | 44 |
| Non-incidental | 231 (65) | 32 | |||||
| Haynes et al[53] | 1997-2009 | 139 | Incidental | 109 (82) | 82.8 | 0.27 | 34.2 |
| Non-incidental | 30 (18) | 81.7 | |||||
| Birnbaum et al[55] | 1994-2010 | 108 | Incidental | 65 (61) | 92 | 0.03 | 42 |
| Non-incidental | 43 (39) | 82 |