Table 1.
Clinicopathological features of the 46 queens with mammary carcinomas enrolled in this study (TNM—Tumor, node, metastasis; ER—Estrogen receptor; PR—Progesterone receptor).
| Clinicopathological Feature | Number of Animals (%) | Clinicopathological Feature | Number of Animals (%) |
|---|---|---|---|
| Breed | Tumor Size | ||
| Undifferentiated | 33 (71.74%) | <2cm | 15 (32.61%) |
| Siamese | 5 (10.87%) | ≥2cm | 31 (67.39%) |
| Persian | 5 (10.87%) | Treatment | |
| Norwegian Forest | 2 (4.35%) | Mastectomy | 41 (89.13%) |
| Russian Blue | 1 (2.17%) | Mastectomy + Chemo | 3 (6.52%) |
| Age | None | 2 (4.35%) | |
| <8years old | 3 (6.52%) | Multiple Tumors | |
| ≥8 years old | 43 (93.48%) | Yes | 28 (60.87%) |
| Reproductive Status; 3 unknown | No | 18 (39.13%) | |
| Spayed | 22 (47.83%) | Malignancy Grade | |
| Not spayed | 21 (45.65%) | I | 2 (4.35%) |
| Lymph node status; 3 unknown | II | 6 (13.04%) | |
| Positive | 15 (32.61%) | III | 38 (82.61%) |
| Negative | 28 (60.87%) | Necrosis | |
| Stage (TNM) | Yes | 35 (76.02%) | |
| I | 11 (23.91%) | No | 11 (23.91%) |
| II | 6 (13.04%) | Lymphocytic infiltration; 2 unknown | |
| III | 25 (54.35%) | Yes | 29 (63.04%) |
| IV | 4 (8.70%) | No | 15 (32.61%) |
| Lymphatic Invasion | Tumor Ulceration | ||
| Yes | 6 (13.04%) | Yes | 7 (15.22%) |
| No | 40 (86.96%) | No | 39 (84.78%) |
| HER2 Status | Ki-67 Index | ||
| Positive | 9 (19.57%) | Low (<14%) | 14 (30.43%) |
| Negative | 37 (80.43%) | High (≥14%) | 32 (69.57%) |
| ER Status | PR Status | ||
| Positive | 12 (26.09%) | Positive | 24 (52.17%) |
| Negative | 34 (73.91%) | Negative | 22 (47.83%) |