Peer-reviewed veterinary case report
Firm tail tip lump with abnormal blood vessels in a German Shepherd
By Yasuno, Kyohei et al.·Published in Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·2011·Research Institute of Biosciences, Japan·View original on PubMed →
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Original publication title: Caudal vascular hamartoma accompanied by aberrant arteriovenous structures in a dog.
- Species:
- dog
Plain-English summary
A 9-year-old female German Shepherd was brought to the vet because of a firm bulge at the tip of her tail. After examining the lesion, the vet found it was a rare type of growth called a vascular hamartoma, which included abnormal blood vessels. While the specific treatment details weren't mentioned, the presence of these unusual structures suggests that the vet may monitor the growth or consider surgical options if necessary. It's important for pet owners to keep an eye on any unusual lumps or bumps on their pets and consult their veterinarian for advice.
People also search for: dog tail lump · German Shepherd skin growth · dog vascular tumor treatment
Abstract
A 9-year-old, female German Shepherd Dog presented with a firm bulging lesion at the tip of the tail. Histologically, the lesion was characterized by numerous poorly circumscribed clusters of vascular structures resembling capillaries that were separated by normal or mucinous connective tissues. The capillary-like vascular structures were composed of several layers: a single von Willebrand factor-positive endothelial cell layer with round, oval, or flattened hyperchromatic nuclei; and 1 or 2 surrounding spindle-shaped smooth muscle actin-positive pericyte layers. In the deep portion of the lesion, there were large vessels that showed morphological aberrations. These thin-to-thick-walled blood vessels corresponded to arteries and veins of varying diameters and were surrounded by fibrosis. The present case report describes a rare cutaneous vascular hamartoma, accompanied by aberrant arteriovenous structures.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/21908374/