Peer-reviewed veterinary case report
MRI features of nasal tumors in 50 dogs
By Avner, A et al.·Published in The Journal of small animal practice·2008·The Queen's Veterinary School Hospital, United Kingdom·View original on PubMed →
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Original publication title: Retrospective review of 50 canine nasal tumours evaluated by low-field magnetic resonance imaging.
- Species:
- dog
Plain-English summary
A group of dogs with nasal tumors underwent low-field magnetic resonance imaging (MRI) to better understand their condition. The imaging revealed that most tumors replaced normal nasal structures and often destroyed the nasal septum. In some cases, the tumors extended into nearby sinuses and bones, but only a few affected the brain. This MRI technique helped veterinarians accurately diagnose and assess the extent of the tumors, which is crucial for planning treatment.
People also search for: dog nasal tumor symptoms · MRI for dog nose problems · treatment for dog nasal cancer
Abstract
OBJECTIVES: Low-field magnetic resonance imaging machines are being used more often in veterinary practice for the investigation of sinonasal disease. The aim of this retrospective study was to describe and characterise the low-field magnetic resonance imaging features of nasal tumours in dogs. METHODS: The Queen's Veterinary School Hospital magnetic resonance imaging database (2001-2005) was searched for dogs with a magnetic resonance imaging diagnosis of a nasal tumour. Fifty cases with histological diagnosis of nasal tumour were found. The appearance and extent of the nasal tumour as well as the involvement of adjacent anatomic structures were examined against a checklist. RESULTS: The most common magnetic resonance imaging findings were as follows. (1) Soft tissue mass replacing the destroyed nasal conchae and/or ethmoturbinates (98 per cent of cases). (2) Nasal septum destruction (68 per cent of cases). (3) Retained secretions with or without mass caudally in frontal sinuses (62 per cent of cases). (4) Nasal/frontal bone destruction (52 per cent of cases). Low-field magnetic resonance imaging allowed differentiation of tumour tissue from retained secretions or necrotic tissue. Magnetic resonance imaging was invaluable in assessing the extension of the tumour into the maxillary recesses, caudal recesses, nasopharynx, adjacent bones and cranial cavity. The tumour often extended caudally into the frontal sinuses, nasopharynx and perhaps most importantly into the caudal recesses. Tumour extension into the cranial cavity was not common (16 per cent), and only three of these cases showed neurological signs. However, 54 per cent of cases showed focal meningeal (dural) hyperintensity, although the significance of this is unclear. A significant difference (P<0.05) in tumour signal intensity between the sarcomas and carcinomas was found. CLINICAL SIGNIFICANCE: The use of a low-field magnetic resonance imaging technique is excellent for the diagnosis and determination of extent of sinonasal tumours.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/18373540/