Case Report: Atypical magnetic resonance appearance of an organizing hematoma in the brain of a dog
Kathryn Dalzell, Rod Bagley, Cheng-Shun Hsueh, Jeremy Brozek, Amanda Jean Fales-Williams · 2026
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Description
Kathryn Dalzell and colleagues report a 2026 veterinary case of a brain bleed in a dog whose MRI looked like almost anything except a simple hematoma. An 8-year-old German Short-haired Pointer arrived with sudden blindness, behavior changes, and weakness on one side, signs pointing to the left forebrain.
The scan showed a sharply circular, well-demarcated lesion with mixed signals, patchy contrast uptake, and a heavy mass effect. That geometry is unusual for hemorrhage, and it raised tumors, inflammation, and even parasite migration as possibilities. The owners chose euthanasia right after imaging, and pathology settled the question: an organizing hematoma in the thalamus, fibrous at the center with fresh bleeding spreading outward. The authors ask radiologists to add this round, centrally enhancing pattern to the known spectrum of dog brain hematomas so the next case is read correctly.
Catalog record
| CREATOR | Kathryn Dalzell, Rod Bagley, Cheng-Shun Hsueh, Jeremy Brozek, Amanda Jean Fales-Williams |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 13829 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |