Peer-reviewed veterinary case report
CT scan signs of arterial pseudoaneurysm in dogs' head and neck
By Ramalho, Goncalo N V et al.·Published in Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·2024·Royal (Dick) School of Veterinary Studies and Roslin Institute, United Kingdom·View original on PubMed →
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Original publication title: Computed tomographic features of suspected arterial pseudoaneurysm in the head and neck of four dogs.
- Species:
- dog
Plain-English summary
Four dogs with oropharyngeal bleeding and a history of trauma were diagnosed with a condition called arterial pseudoaneurysm, which is when blood leaks out of an artery and collects in surrounding tissues. Using a special imaging technique called computed tomography (CT), veterinarians were able to see the blood accumulation near the common carotid artery in these dogs. The CT scans showed that the blood was actively leaking from the artery but was contained by nearby tissues. Recognizing this condition is important for treating dogs with oral injuries, and the dogs were likely monitored for further care based on their specific needs.
People also search for: dog bleeding from mouth · dog trauma CT scan · oropharyngeal injury in dogs
Abstract
Computed tomography is a valuable diagnostic technique in the clinical work-up of dogs with oropharyngeal trauma and bleeding. Traumatic extravasation can manifest as a pseudoaneurysm. A pseudoaneurysm is an extraluminal accumulation of blood that is contained by the adventitia layer or neighboring tissues. The purpose of this retrospective, multicenter, observational case series study was to describe the CT features in dogs with presumed oropharyngeal arterial pseudoaneurysm and its potential association with trauma. Imaging archives were searched for canine patients with head and neck CT studies showing visible extravasation of contrast-enhanced blood contained by soft tissue structures. Medical records of these patients were reviewed for oropharyngeal bleeding or trauma and reported. Four dogs met the inclusion criteria. CT findings included a well-defined, confined area of vascular contrast enhancement adjacent to the common carotid artery or its branches. The mean contrast enhancement in the corresponding artery and pseudoaneurysm lesion was similar, suggesting that these lesions represent active arterial extravasation. Four-dimensional CT was performed in one case and demonstrated contrast medium leaking from an artery and being contained by adjacent soft tissue structures. All dogs had a history and imaging findings consistent with oropharyngeal bleeding and trauma. Arterial pseudoaneurysm should be considered as a differential diagnosis in dogs with oral trauma and CT features of a well-defined, periarterial, strongly contrast-enhancing lesion.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/39183521/