Table 2. Clinicopathological features of initial diagnosis retrieved from CHCAMS and literatures (n=41).
| Features | Misdiagnosis* (n=13), n (%) | No misdiagnosis (n=28), n (%) | χ2 | P |
|---|---|---|---|---|
| Source | 1.183 | 0.277 | ||
| CHCAMS | 1 (7.7) | 6 (21.4) | ||
| Literature | 12 (92.3) | 22 (78.6) | ||
| Known tumor history | 15.138 | <0.001 | ||
| Yes | 7 (53.8) | 28 (100.0) | ||
| No | 6 (46.2) | 0 (0.0) | ||
| Time interval | 0.173 | 0.678 | ||
| Synchronous | 6 (46.2) | 11 (39.3) | ||
| Metachronous | 7 (53.8) | 17 (60.7) | ||
| Lesion foci | 0.018 | 0.894 | ||
| Solitary | 10 (76.9) | 21 (75.0) | ||
| Multiple | 3 (23.1) | 7 (25.0) | ||
| Specimen type | 1.086 | 0.297 | ||
| Biopsy | 10 (76.9) | 25 (89.3) | ||
| Mastectomy | 3 (23.1) | 3 (10.7) | ||
| Ipsilateral axillary# | 2.342 | 0.126 | ||
| Yes | 11 (84.6) | 17 (60.7) | ||
| No | 2 (15.4) | 11 (39.3) | ||
| Distant※ | 0.777 | 0.378 | ||
| Yes | 8 (61.5) | 21 (75.0) | ||
| No | 5 (38.5) | 7 (25.0) |
*, Initially misdiagnosed as primary breast carcinoma. #, Ipsilateral axillary lymphadenopathy to the breast mass. ※, Distant lymphadenopathy (including contralateral axillary).