Читать книгу Canine and Feline Respiratory Medicine - Lynelle Johnson R., Lynelle R. Johnson - Страница 49

Nasal cytology can be performed by pressing a microscope slide directly onto the nose of an animal or by obtaining material with a cotton swab and spreading it onto a slide. It is non‐invasive and inexpensive; however, there are substantial limitations to the amount of information obtained from this test. Its primary usefulness is in the diagnosis of nasal fungal infection with cryptococcosis (see Chapter 4). If eosinophils are noted in a dog with cough and nasal discharge, the possibility of eosinophilic lung disease should be considered (see Chapter 6). Accuracy in the diagnosis of nasal aspergillosis or neoplasia is poor unless an endoscopically obtained sample from a fungal plaque (De Lorenzi et al. 2006) or from a mass lesion is examined cytologically.