Figure 1. Right front paw pad

A 4-year-old neutered male Golden Doodle dog from Pennsylvania presented with recent
development lesions on the paw pads. Discrete ulcers were located in the central paw pad of
the right forepaw (2-cm) and right hindpaw (3-cm). Each ulcer contained a bed of pink
granulation tissue. The larger ulcer had firm rounded edges and was located adjacent to a
hyperkeratotic plaque. The entire paw pads were swollen and hyperkeratotic with yellow
adherent crusts. Aerobic culture yielded Methicillin-resistant Staphylococcus epidermidis.
Anaerobic culture, fungal culture, and mycobacterium culture yielded no growth. The patient had
a history of a firm nodule on the left hip (9 months prior). Punch biopsy samples of the paw pads
were submitted for histopathologic examination.

Figure 2. Right hindpaw

Figure 3. H&E. 2x magnification

Figure 4. H&E. 10x magnification

Figure 5. H&E. 40x magnification