Imaging Diagnosis and Misdiagnosis of Multi-nodular Bronchioalveolar Carcinoma / 实用放射学杂志

ABSTRACT

Objective To study the imaging features and the reason of misdiagnosis of multi-nodular bronchioalveolar carcinoma(BAC).Methods 33 cases with the BAC proved by pathology,were reviewed,including 20 males and 13 females,the age ranged from 34～76 years with an average age of 54.2 years.X-ray there were over twice X-ray filmes in all cases,and CT scans with GE 9800 Quick were performed in 30 cases . The imaging features were analysed . Results Imaging findings: Miliary noduli were inhomogeneous in distribution,size and density.The large noduli generally located at the periphery of lung or under the pleura and noduli were focused together,“vacuole sign” was present in 72.7% cases and the noduli were around the vacuole,and lobulated.69.7% of nodule focuses were in company with consolidatory shade . The rate of X-ray misdiagnosis was 75.8%, in which 72.0% were misdiagnosed as TB . CT misdiagnostic rate was 36.4%.The misdiagnostic reasons were unsufficient in consideration of clinical symptom and imaging findings.Conclusion The BAC is the developmental stage of cancer.The accurate diagnosis can be improved if clinical-imaging features are analysed properly,and reexamination and comparison are taken carefully.