Miscellaneous Conditions
Amelia R. Woolums
Lung Tumors
Lung tumors are uncommon in large animals. Those reported include pulmonary alveolar carcinomas, pulmonary adenomas, pulmonary adenocarcinomas, bronchogenic carcinoma, and pulmonary blastoma.15,16 Malignant forms metastasize to regional lymph nodes and occasionally to other organs.
Lymphosarcoma is the most frequent neoplasm to become metastatic to the lung, and uterine and ovarian adenocarcinoma may undergo metastasis to the lung. Because many lung neoplasms in cattle are incidental findings at slaughter or necropsy, clinical signs are therefore not well documented. The lesions are typically discrete, round, yellow to gray masses distributed throughout the lung tissue. Tumors are most likely to be detected antemortem by radiographic examination. Differential diagnoses in such cases include pulmonary abscesses, mycotic pneumonias, and tuberculosis.
More on the topic Miscellaneous Conditions:
-
Veterinarian -