Peer-reviewed veterinary case report
Dog's invasive nasal polyps shrank after photodynamic therapy
By Osaki, T et al.·Published in Australian veterinary journal·2012·Veterinary Teaching Hospital, Japan·View original on PubMed →
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Original publication title: Temporary regression of locally invasive polypoid rhinosinusitis in a dog after photodynamic therapy.
- Species:
- dog
Plain-English summary
A 5-year-old male cross-breed dog with chronic sneezing and facial swelling was diagnosed with chronic rhinosinusitis caused by myxomatous polyps. Initially, the dog was treated with a steroid medication, which helped a little but did not change the CT scan results. After eight months, the dog received a special light therapy called photodynamic therapy (PDT), which significantly reduced the swelling and sneezing, and follow-up scans showed improvement. The dog continued to receive additional PDT sessions over the next year, successfully managing the symptoms for about 10 months.
People also search for: dog sneezing treatment · chronic rhinosinusitis in dogs · photodynamic therapy for dogs
Abstract
A 5-year-old male cross-breed dog with chronic rhinosinusitis was presented. Computed tomography (CT) revealed opacities consistent with soft tissue or fluid in the left nasal cavity and frontal sinus. A diagnosis of chronic rhinosinusitis with myxomatous polyps was based on the histology of biopsy samples, so prednisolone treatment was administered for 1 month. Although the clinical signs slightly improved, no changes were observed on the CT images. At 8 months after the initial presentation, the dog was treated with antivascular photodynamic therapy (PDT) using benzoporphyrin derivative monoacid ring A and, 11 days later, CT revealed remarkably decreased soft tissue opacity; the facial swelling and sneezing also resolved. Three additional sessions of PDT were performed at 114, 210, and 303 days after the first PDT because of recurrence of clinical signs. The disease was well controlled for approximately 10 months by antivascular PDT.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/23106325/