Table 6 Description of the histopathological features of the digital lesions identified indicating the frequency with which each feature was identified in each lesion’s category

Congestion and perivascular cuffing of dermal vessels (sub-categories were identified depending upon the predominant leucocyte type).

• Neutrophils (4 of 11)

• Lymphocytes (1 of 11)

• Mixed leucocyte population (6 of 11)

• Mixed leucocyte population (6 of 11)

Degeneration of epithelial cells /keratinocytes

• Vacuolar degeneration (2 of 3)

• Vacuolar degeneration (4 of 4)

• Reticular degeneration (1 of 3)

• Reticular degeneration (3 of 4)

Dermal fibroplasia

0

2

Epidermal erosion

5

0

Epidermal hyperplasia

6

5

Epidermal micropustule

6

6

Intra-lesional bacteria

5

2

Serocellular crust formation

1

4

Thrombosis of dermal vessels

1

2