Regional dermatoses

image of Regional dermatoses
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This chapter covers the clinical approach, diagnosis and treatment for diseases of the nasal planum, paws, footpads, interdigital skin and anal sacs.

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33.3 Mucocutaneous pyoderma affecting the nose of a dog. Note the depigmentation and crusting of the nares.
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33.4 Dog with discoid lupus erythematosus that presented predominantly with nasal planum depigmentation.
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33.5 Discoid lupus erythematosus in a dog. This patient also presented with nasal planum depigmentation, but more severe crusting, erosions and scarring compared with the dog in Figure 33.4 .
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33.6 This dog presented with lesions on the eyelid margins.
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33.7 Canine epitheliotrophic lymphoma causing depigmentation and marked loss of the nasal architecture characteristic of this disease. The depigmentation had developed over 2–3 weeks.
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33.10 Cytology of an intact pustule from a case of pemphigus foliaceus. Note the non-degenerate neutrophils and free-floating acantholytic keratinocytes. (Diff-Quik® stain; original magnification X1000)
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33.11 Acute avulsion of the claw exposing the claw bed in lupoid onychitis.
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33.12 Brown discoloration of the claw in a case of paronychia.
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33.13 Marked interdigital swelling associated with furunculosis in an overweight Bulldog with atopic dermatitis.
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33.15 Perianal fistula on the right-hand side of a dog’s anus. The catheter denotes the position of the anal sac.
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