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  • Title: Cytologic diagnosis of laryngeal and hypopharyngeal squamous cell carcinoma in sputum.
    Author: Matsuda M, Nagumo S, Horai T, Yoshino K.
    Journal: Acta Cytol; 1988; 32(5):655-7. PubMed ID: 3421013.
    Abstract:
    A prospective study of the value of sputum cytology in the diagnosis of squamous cell carcinoma of the larynx and hypopharynx is reported. Sputum cytology established the diagnosis in 63.5% of the patients with laryngeal lesions and in 77.4% of the patients with hypopharyngeal lesions. In laryngeal cancer, a positive diagnosis by sputum cytology was related to clinical T factors (according to the TNM classification): while only 29.4% of T1 lesions were positively detected by sputum cytology, 63.3% of T2 lesions, 69.7% of T3 lesions and 79.2% of T4 lesions were so detected. In hypopharyngeal cancer, there was no discernible relationship between sputum cytodiagnosis and clinical T factors. Generally, there was only a small number of cancer cells present in the sputum in these cases. Some of the squamous cancer cells were not very conspicuous and would require careful screening of the sputum specimens to be detected.
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