The prognostic significance of sputum cytology.
D000328:Adult; D000368:Aged; D002283:Carcinoma, Bronchogenic / Q000175:diagnosis*; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis*; D003581:Cytodiagnosis; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D013183:Sputum / Q000166:cytology*