Vascular hamartoma in the oesophagus of a dog
A four-and-a-half-year-old male, neutered mixed-breed dog presented for evaluation of lethargy, melaena and haematemesis. Haematologic examination showed a severe regenerative, normocytic, hypochromic anaemia and mild hypoproteinaemia. Endoscopic assessment showed a dark red, raised irregular mass in the distal oesophagus. Computed tomographic angiography showed a non-contrast enhancing, ovoid soft tissue mass located between the aorta and the oesophagus without evidence of oesophageal varices. Supportive care was provided but the dog was euthanised five days later due to recurrent oesophageal bleeding. Necropsy confirmed the lesion in the distal oesophagus. Histologic examination showed a mass with large, multifocal, submucosal and subserosal, well-organized and well-differentiated vascular channels. The vascular channels were distended by numerous red cells and thrombi, consistent with a vascular hamartoma. A hamartoma is defined as an excessive but focal, monoclonal proliferation of cells and tissues native to the organ in which it occurs. Vascular hamartoma should be considered as a differential diagnoses for a space occupying lesion of the gastrointestinal tract or as a cause of repeated gastrointestinal blood loss.
|Publication Type:||Journal Article|
|Murdoch Affiliation:||School of Veterinary and Biomedical Sciences|
|Publisher:||Australian Small Animal Veterinary Association|
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