Peer-reviewed veterinary case report
Cat with breathing trouble caused by lymphoma pressing on lung vein
By Morita, Tomoya et al.·Published in The Journal of veterinary medical science·2026·Cooperative Department of Veterinary Medicine, Japan·View original on PubMed →
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Original publication title: Pulmonary vein stenosis due to pulmonary lymphoma in a cat.
- Species:
- cat
Plain-English summary
A 6-year-old spayed female domestic shorthair cat was brought in for breathing problems that had been worsening over the past month. An ultrasound of her heart revealed a large mass near the left atrium that was pressing on a pulmonary vein, causing the breathing issues. After starting treatment with L-Asparaginase and prednisolone, the size of the mass decreased, and her breathing improved significantly. This case highlights how lymphoma can lead to breathing problems in cats, but effective treatment can help reduce the mass and alleviate symptoms.
People also search for: cat breathing problems · lymphoma treatment in cats · pulmonary vein stenosis in cats
Abstract
A six-year-old spayed female domestic shorthair presented with a one-month history of respiratory distress. Echocardiography showed a large lesion adjacent to the left atrium that was compressing the pulmonary vein. Peak pulmonary venous flow velocity was high (1.5 m/sec). The diagnosis was pulmonary vein stenosis due to mass compression. Fine-needle biopsy cytology of the lung mass led to a direct diagnosis of lymphoma. After two weeks of treatment with L-Asparaginase and prednisolone, a reduction in the mass adjacent to the left atrium and slower peak pulmonary venous flow velocity (0.9 m/sec) were observed. Pulmonary vein stenosis was attenuated by a reduction in the size of lymphoma. This is the first case report of secondary pulmonary vein stenosis in a cat.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/41285455/