Peer-reviewed veterinary case report
CT scan signs of primary lung tumors in dogs
By Marolf, Angela J et al.·Published in Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·2011·Department of Environmental and Radiological Health Sciences, United States·View original on PubMed →
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Original publication title: Computed tomographic appearance of primary lung tumors in dogs.
- Species:
- dog
Plain-English summary
A group of dogs with primary lung tumors were found to have well-defined masses in their lungs that could be seen on CT scans. Most of these tumors were located in the outer parts of the lungs and had signs of air-filled spaces inside them. In some cases, the tumors caused narrowing or blockage of the airways. Out of the 19 dogs studied, five had signs that the cancer had spread to other parts of the body. The findings suggest that if a dog has a solitary mass in the lungs visible on a CT scan, it could be a primary lung tumor.
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Abstract
Canine primary lung tumors typically appear radiographically as a well-circumscribed solitary mass in the periphery of a caudal lung lobe. Consolidated and diffuse forms of primary lung tumors have also been described. Nineteen dogs with computed tomographic (CT) images of the thorax and a histological diagnosis of primary lung tumor (17 primary carcinomas and two primary sarcomas) were evaluated retrospectively to characterize the CT findings. All primary lung tumors were bronchocentric in origin with internal air bronchograms. The bronchi were typically narrowed, displaced, and often obstructed by the tumor. Eighteen of 19 (95%) of the tumors were solitary and there was one pneumonic/alveolar form. Most solitary tumors were well circumscribed (17/18), located in the central to periphery of the lung (14/18), and in a cranial or caudal lobe (16/19). Most primary lung tumors (11/17) had mild to moderate heterogeneous contrast enhancement. Five of 19 dogs (26%) had evidence of pulmonary metastasis. Internal mineralization (3/19) and tracheobronchial lymphadenopathy (4/19) were also identified. On CT examination, solitary, well circumscribed, bronchocentric masses with internal air bronchograms are consistent with a primary pulmonary tumor in dogs.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/21388468/