Abnormal skin fragility in a cat with cnolangio‐carcinoma

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Abstract
An eight‐year‐old shorthaired cat which presented with a five‐month history of bouts of anorexia and vomiting, developed a large spontaneous skin tear over the left shoulder when manipulated for clinical workup. The cat had no previous history of abnormal skin fragility and clinical examination of the skin revealed a general thinning but no scarring or hyperextensibility. After one day of hospitalisation the animal was euthanased because of its poor condition and on post mortem examination a cholangiocarcinoma with distant metastasis was identified. The skin biopsy specimens obtained from different sites revealed dermal atrophic changes, characterised in electron microscopy by disorganisation in the packing of both collagen fibrils and fibres, and by collagen fibrils with an abnormally wide range of diameters and with an irregular shape in cross section. Although no specific cause of the dermal lesions was suggested, this case differed greatly from the fragile skin conditions previously described in the cat.

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