Table 1. Frequency of MCTs in various breeds of dogs, in general and according to the Patnaik grading system and the Kiupel grading system.
| Breeds | All MCTs | Patnaik’s | Kiupel’s | Reference groupb | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MCTs | Grade I | Grade II | Grade III | MCTs | Low grade | High grade | ||||||||||||
| N | % | N | % | N | % | N | % | N | % | N | % | N | % | N | % | N | % | |
| Labrador Retriever | 67 | 27.46 | 61 | 27.11 | 8 | 13.11 | 41 | 67.21 | 12 | 19.67 | 42 | 26.92 | 33 | 78.57 | 9 | 21.43 | 142 | 15.50 |
| Mixed | 64 | 26.23 | 59 | 26.22 | 4 | 6.78 | 38 | 64.41 | 17 | 28.81 | 42 | 26.92 | 28 | 66.67 | 14 | 33.33 | 335 | 36.57 |
| Boxer | 37 | 15.16 | 35 | 15.56 | 10 | 28.57 | 22 | 62.86 | 3 | 8.57 | 25 | 16.03 | 21 | 84.00 | 4 | 16.00 | 75 | 8.19 |
| French Bulldog | 8 | 3.28 | 8 | 3.56 | 0 | 0.00 | 4 | 50.00 | 4 | 50.00 | 5 | 3.21 | 3 | 60.00 | 2 | 40.00 | 10 | 1.09 |
| Golden Retriever | 10 | 4.10 | 7 | 3.11 | 1 | 14.29 | 6 | 85.71 | 0 | 0.00 | 4 | 2.56 | 3 | 75.00 | 2 | 50.00 | 26 | 2.84 |
| Pit Bull | 7 | 2.87 | 7 | 3.11 | 1 | 14.29 | 3 | 42.86 | 3 | 42.86 | 3 | 1.92 | 0 | 0.00 | 3 | 100.00 | 13 | 1.42 |
| Pug | 5 | 2.05 | 5 | 2.22 | 0 | 0.00 | 4 | 80.00 | 1 | 20.00 | 5 | 3.21 | 4 | 80.00 | 1 | 20.00 | 2 | 0.22 |
| German Shepherd | 4 | 1.64 | 4 | 1.78 | 0 | 0.00 | 4 | 100.00 | 0 | 0.00 | 3 | 1.92 | 3 | 100.00 | 0 | 0.00 | 26 | 2.84 |
| Yorkshire Terrier | 4 | 1.64 | 4 | 1.78 | 2 | 50.00 | 0 | 0.00 | 2 | 50.00 | 3 | 1.92 | 1 | 33.33 | 2 | 66.67 | 15 | 1.64 |
| Beagle | 3 | 1.23 | 3 | 1.33 | 0 | 0.00 | 3 | 100.00 | 0 | 0.00 | 1 | 0.64 | 1 | 100.00 | 0 | 0.00 | 12 | 1.31 |
| Bull Terrier | 3 | 1.23 | 3 | 1.33 | 1 | 33.33 | 2 | 66.67 | 0 | 0.00 | 3 | 1.92 | 3 | 100.00 | 0 | 0.00 | 2 | 0.22 |
| Pinscher | 3 | 1.23 | 3 | 1.33 | 0 | 0.00 | 3 | 100.00 | 0 | 0.00 | 3 | 1.92 | 3 | 100.00 | 0 | 0.00 | 7 | 0.76 |
| Poodle | 3 | 1.23 | 3 | 1.33 | 0 | 0.00 | 3 | 100.00 | 0 | 0.00 | 3 | 1.92 | 2 | 66.67 | 1 | 33.33 | 15 | 1.64 |
| Bouvier Bernois | 2 | 0.82 | 2 | 0.89 | 0 | 0.00 | 1 | 50.00 | 1 | 50.00 | 1 | 0.64 | 0 | 0.00 | 1 | 100.00 | 3 | 0.33 |
| Bullmastiff | 2 | 0.82 | 2 | 0.89 | 0 | 0.00 | 2 | 100.00 | 0 | 0.00 | 2 | 1.28 | 2 | 100.00 | 0 | 0.00 | 5 | 0.55 |
| Castro Laboreiro Dog | 2 | 0.82 | 2 | 0.89 | 0 | 0.00 | 1 | 50.00 | 1 | 50.00 | - | - | - | - | - | - | 0 | 0.00 |
| Rottweiler | 2 | 0.82 | 2 | 0.89 | 0 | 0.00 | 1 | 50.00 | 1 | 50.00 | 1 | 0.64 | 0 | 0.00 | 1 | 100.00 | 12 | 1.31 |
| Cocker Spaniel | 2 | 0.82 | 1 | 0.44 | 0 | 0.00 | 1 | 100.00 | 0 | 0.00 | 2 | 1.28 | 1 | 50.00 | 1 | 50.00 | 39 | 4.26 |
| Other breeds | 16 | 6.56 | 14 | 6.16 | 2 | 14.28 | 8 | 57.14 | 5 | 35.7 | 8 | 5.12 | 5 | 62.50 | 3 | 37.50 | 46 | 5.02 |
| Total | 244 | 21.03a | 225 | 19.21 | 29 | 12.89 | 146 | 64.89 | 50 | 22.22 | 156 | 14.55 | 111 | 71.15 | 45 | 28.85 | 916 | 78.22 |
a
Percentage of dogs with MCT among all tested dogs.
b
Total number of dogs with other skin tumors in a specific dog breed.