Table 2.
Histological classification of canine cutaneous histiocytomas using the degree of lymphocytic infiltration; number of tumours in each group (n); median minimum and maximum age of dogs in years
| Age of dogs | |||||
|---|---|---|---|---|---|
| Group | Degree and distribution of lymphocytic infiltration* | n | Min | Median | Max |
| I | None to minimal; diffuse | 6 | 0.5 | 1.5 | 3.0 |
| II | Moderate; diffuse infiltration in the centre, nodular infiltrates at the periphery | 5 | 1.0 | 4.0 | 1.0 |
| III | Marked; nodular infiltrates central and peripheral | 10 | 0.4 | 0.9 | 4.0 |
| IV | Lymphocyte population is greater than tumour cell population | 9 | 0.5 | 1.0 | 3.0 |
*
According to Cockerell and Slauson 19795