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Keywords:

  • horse;
  • colic;
  • thoracoscopy;
  • neoplasia

Summary

This report describes the use of thoracoscopy in 2 horses to obtain an antemortem diagnosis of thoracic lymphoma. The first horse in this report presented for assessment of weight loss and fever of unknown origin. The second presented with a history of upper respiratory tract noise and coughing during exercise. Although a strong clinical suspicion of neoplasia existed, a definitive antemortem diagnosis of thoracic lymphoma was not made in either case until biopsy samples obtained during standing thoracoscopy were examined.