PMC8024095_01
The patient on an examination bench. (a) Two large deep ulcers on the dorsum spanning the thoraco-lumbosacral region with cellulitis. (b) The dorsum of the thorax, after shaving, showing coalescing multifocal purple to black necrotic skin.
CRIVEM2021-5544558.001.jpg
PMC8024095_01_CRIVEM2021-5544558.001.jpg
fig1
A 5-year-old intact male mixed breed dog (body weight = 28.0 kg) was presented with two wide dorsal ulcers: the dimension of the thoracolumbar lesion was 10.0 cm x 9.0 cm and the circular lumbosacral lesion a diameter of 15.8 cm (Figure 1(a)). Overlying skin of the affected areas sloughed off, according to history, exposing a crust-coated reddened subcutaneous and deep fascia tissue (Figure 1(a)). After clinical examination and shaving of the dorsal thorax, this area showed crepitating cyanotic patches of necrotizing skin (Figure 1(b)).
Photomicrograph of the skin (haematoxylin and eosin stain, x100) showing damaged superficial fascia and subcutaneous tissue (arrow), infiltrated by necrotic and effete polymorphs and histiocytes (arrowhead) and bacteria.
CRIVEM2021-5544558.002.jpg
PMC8024095_01_CRIVEM2021-5544558.002.jpg
fig2
Photomicrograph (haematoxylin and eosin stain, x100) demonstrating epidermal hyperplasia (arrow) and mass infiltration of the subcutis and dermis with bacteria and inflammatory cells (arrowhead).
CRIVEM2021-5544558.003.jpg
PMC8024095_01_CRIVEM2021-5544558.003.jpg
fig3