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http://dx.doi.org/10.17555/jvc.2015.12.32.6.530

Hemorrhargic Effusion Caused by Chronic Torsion of Right Middle Lung Lobe with Concurrent Ovarian Tumor in a Female Miniature Poodle Dog  

Kim, Tae-Hwan (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University)
Hong, Subin (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University)
Kim, Minkyung (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University)
Shin, Jeong-In (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University)
Jang, Yun-Sul (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University)
Lee, Jae-Hoon (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University)
Publication Information
Journal of Veterinary Clinics / v.32, no.6, 2015 , pp. 530-535 More about this Journal
Abstract
An 11-year-old intact female miniature poodle presented with a four-month history of hemorrhagic effusion. The patient was alert on physical examination, although muffled heart sounds were noted upon auscultation of the right hemithorax. The radiographic finding was pleural effusion. Ultrasonography revealed cystic changes in both ovaries and several nodules in the liver. A refractory opacity in the right lung field, as visualized with computer tomography (CT), was diagnosed as right middle lung lobe torsion with a collapsed bronchus. Five days after diagnosis, a right fifth intercostal thoracotomy was performed to remove the right middle lung lobe; the right middle lung lobe was grossly shrunken as a result of chronic lung lobe torsion. Ovariohysterectomy was also performed. Histopathologic examination revealed papillary adenocarcinoma in both ovaries and suspected metastasized ovarian adenocarcinoma cells in the lung lobe. The patient recovered favorably and had been doing well up to two months post-surgery. However, after four months, the dog presented with respiratory difficulty. The radiographic findings were pleural effusion and collapse of the right cranial and left caudal lung lobes. Malignant cells of epithelial origin were observed in the pleural effusion. The tumor cells were suspected to be metastasized cells from the previously resected lung lobe. Although cancer treatment was recommended, the suggestion was suspended and the dog was discharged from hospital. This was a case of lung lobe torsion that had occurred because of hemorrhagic effusion due to tumor. Although ovariohysterectomy and lobectomy were performed, there was a relapse of hemorrhagic effusion because of metastasized tumor from the previously resected lung lobe.
Keywords
right middle lung lobe; lung lobe torsion; hemorrhagic effusion; ovarian tumor; dog;
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