tailieunhanh - Báo cáo thú y: "Survey radiography and computerized tomography imaging of the thorax in female dogs with mammary tumors"

Tuyển tập các báo cáo nghiên cứu về bệnh học thý y được đăng trên tạp chí Acta Veterinaria Scandinavica cung cấp cho các bạn kiến thức về bệnh thú yđề tài: Survey radiography and computerized tomography imaging of the thorax in female dogs with mammary tumors. | Otoni et al. Acta Veterinaria Scandinavica 2010 52 20 http content 52 1 20 AVS ACTAVETERINARIA SCANDINAVICA RESEARCH Open Access Survey radiography and computerized tomography imaging of the thorax in female dogs with mammary tumors Carolina C Otoni 1 Sheila C Rahal1 Luiz C Vulcano2 Sérgio M Ribeiro3 Khadije Hette1 Tatiana Giordano1 Danuta P Doiche2 Renée L Amorim4 Abstract Background Accurate early diagnosis of lung metastases is important for establishing therapeutic measures. Therefore the present study aimed to compare survey thoracic radiographs and computerized tomography CT scans to specifically identify lung metastases in female dogs with mammary tumors. Methods Twenty-one female dogs weighing 3 to 34 kg and aged from 5 years to 14 years and 10 months with mammary tumors were studied. In all dogs before the imaging examinations fine-needle aspiration cytology of the mammary tumors was performed to confirm the diagnosis. Three-view thoracic radiographs were accomplished right lateral left lateral and ventrodorsal views. Sequential transverse images of the thorax were acquired on a spiral Scanner before and after intravenous bolus injection of nonionic iodine contrast. Soft-tissue and lung windows were applied. All the mammary tumors were surgically removed and examined histologically. Results The correlation between the cytological and histological results regarding presence of malignancy was observed in only 17 cases. In radiographic examinations no dog displayed signs of lung metastases or thorax chest lesions. CT detected lung metastasis in two cases while small areas of lung atelectasis located peripherally were found in of the dogs. Conclusion In this study population spiral CT showed higher sensitivity than chest radiographies to detect lung metastasis this indicates that CT should be performed on all female dogs with malignant mammary tumors. Background Mammary tumors constitute the most frequent neoplastic disease in female

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