Abstract:Respiratory tract cytology is well recognized and widely accepted as the initial step in the diagnosis of respiratory tumors. In particular, bronchial and lung tumors are diagnosed by cytologic examination of either exfoliated cells in sputum or bronchial brush and lavage specimens. Lesions in the upper respiratory tract, including the nasal cavities, mouth, pharynx and larynx, can also be diagnosed using cytology. However, tumors are rare events in the upper airways and relatively few studies have been publis… Show more
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