Analysis Of Clinical Character And Inquiry About Misdiagnosis Of Primary Tracheal Cancer

AMI:To inquiry into clinical character, misdiagnostic cause and method of improving the diagnostic accuracy of Primary tracheal cancer at early stage. Method: The 93 case of Primary tracheal cancer ,confirmed by bronchoscope and pathology,were Retrospectively studied. Result: The main signs/symptoms of primary tracheal cancer were cough,sputum and hemoptysis etal. Chest radiography showed abnormal manifestation that related to primary tumor in 67 cases. CT imagining manifested that protrusion toward cavities in 64 cases, diffuse thickening of tracheal wall in 29 cases. Bronchoscope found that lesion was located in lower one-third of tracheal 37 cases,carina in 36 cases, middle one-third of tracheal in 13 cases,upper one-third of tracheal in 7 cases. 54 cases had squamous carcinoma, 17 cases had small cell carcinoma, 10 cases had adenocarcinoma , 1 case had adenid cystic carcinoma ,11 cases had undifferentiated .Misdiagnostic incidence was 72.07% before bronchoscope was done. Conclusion: Primary tracheal cancer lacked specific symptoms/signs at early stage. Primary lesion were not manifested in chest radiography .Growth cite and patter can be identified from CT manifestation .Bronchoscope not only can found tumor,s site, size and growth patter, but also can biopsy and brush to acquired pathological specimen. Proliferation was the most growth pattern, squamous cell carcinoma was the most frequent histological type. So to improve realization of Primary tracheal cancer and to positively practice CT and bronchoscope examination can help increase the accuracy of diagnosis at early stage.