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Peer-reviewed veterinary case report

Dog with rare bone tumor in main vein after liver surgery

By Tremolada, Giovanni et al.·Published in Frontiers in veterinary science·2023·Colorado State University College of Veterinary Medicine, United States·View original on PubMed

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Original publication title: Primary extraskeletal osteosarcoma of the post-hepatic caudal vena cava in a dog-Case report.

Species:
dog
OsteosarcomaMovement & jointsDogs

Plain-English summary

A 7-year-old male neutered mixed breed dog was diagnosed with a rare type of cancer called extraskeletal osteosarcoma, which developed in a major vein near the liver. The dog showed symptoms that led to concerns about a possible blood clot in the vena cava, but further testing revealed the tumor instead. This case highlights the challenges in diagnosing such tumors and the importance of tissue analysis for accurate identification. Unfortunately, extraskeletal osteosarcoma generally has a poor prognosis, and treatment options may be limited.

People also search for: dog cancer symptoms · mixed breed dog tumor treatment · vena cava blood clot in dogs

Abstract

Extraskeletal osteosarcoma (EOSA) in dogs is a rare malignant mesenchymal tumor of somatic soft tissues or more commonly visceral organs with a poor prognosis. In dogs, EOSAs have been described as arising from multiple locations, but differently from humans, never from a main vessel. In this report, we describe the first case of an EOSA arising from the post-hepatic caudal vena cava in a 7-year-old male neutered mix breed dog. This report focuses on the description of the diagnostic challenges to obtain a preoperative diagnosis, highlights the importance of histopathology for a correct diagnosis, and introduces a new differential diagnosis for an animal presenting with a suspected thrombus of the vena cava.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/37808103/