Peer-reviewed veterinary case report
MRI signs of single spine tumors in dogs from 2010-2019
By Hanot, Emilie Marine et al.Ā·Published in Journal of the American Animal Hospital AssociationĀ·2021Ā·View original on PubMed ā
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Original publication title: MRI Features of Solitary Vertebral Masses in Dogs: 20 Cases (2010-2019).
- Species:
- dog
Plain-English summary
A group of dogs with solitary vertebral masses were examined using MRI to determine if the images could help tell the difference between cancerous and non-cancerous growths. Out of 20 dogs, 15 had malignant masses while 5 had benign ones. The study found that certain MRI features, like changes in the bone and specific signals on the scans, were linked to malignancy. For example, bone destruction and certain signal intensities indicated cancer, while other features suggested a benign condition. This research could help vets better diagnose these types of masses in dogs, but more cases are needed for clearer conclusions.
Abstract
The objective of the study was to describe the MRI features of cytologically or histologically diagnosed solitary vertebral masses in dogs and identify potential MRI features enabling differentiation between malignant and benign lesions. Patients were divided into malignant and benign groups according to the final diagnosis. Medical records and MRI studies were retrospectively reviewed, and specific imaging features were compared. The malignant group comprised 15 dogs, with 5 dogs included in the benign group. MRI features of the different histopathologic/cytologic types of masses are described. Involvement of the vertebral body, a hyperintense signal on T2-weighted, short tau inversion recovery, T1-weighted, and T1-weighted gradient echo sequences and evidence of cortical destruction were signifi-cantly associated with malignancy (P < .05). Hypointensity on T1-weighted gradient echo sequence was significantly associated with benign masses (P < .05). The presence of bone sclerosis was significantly associated with osteosarcomas compared with other malignant masses (P < .05). Fractures (5 cases) were only seen in the group of malignant masses. This pilot study identifies some MRI features that may help differentiate between malignant and benign solitary vertebral masses. Greater case numbers are needed in future studies.
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Search related cases āOriginal publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/34097039/