CT manifestations of mucoepidermoid carcinoma of trachea and bronchus / 实用放射学杂志

ABSTRACT

Objective To discuss specific CT signs of primary trachea,bronchus mucoepidermoid carcinoma.Methods A retro-spective analysis was made on CT features,clinical manifestations and relevant pathology materials of 10 cases of trachea,bronchus mucoepidermoid carcinoma that had been proved by pathological examinations.Results (1)Sites1 case was in the trachea,1 case in the bronchus,3 cases in lobar bronchus,5 cases in segmental bronchus and they were all central types.(2)Form and size2 cases were lobular,7 cases were oval or round,1 case was irregular.The maximum diameters of the tumor were 10-39 mm (averagely 25 mm).(3)Edge8 cases had smooth edge,2 cases had rough edge with infiltration of adjacent pulmonary parenchyma.(4)Densi-ty6 cases with uneven density,3 cases with even density.The density of 4 cases were higher than that of chest wall muscle,4 cases were similar to chest wall muscle and 1 case lower than chest wall muscle.Calcification can be seen in 4 tumors.(5 )Enhancement features9 cases underwent CT enhancement scanning,8 cases had mild enhancement and 1 case with light enhancement.(6)Pe-ripheral conditionsall cases showed trachea or bronchus stenosis and blocking,5 cases with obstructive pneumonia,2 cases with obstructive atelectasis,3 cases with far-end bronchus obstructive mucous embolism,1 case with obstructive emphysema,there was no evident swelling in mediastinum or hilar lymph nodes,1 case with multiple pulmonary bulla and pneumothorax in the left lung. Conclusion Primary mucoepidermoid carcinoma of trachea and bronchus is mostly central type,low potential malignancy.CT mani-festations are as follows,occurred in the trachea or bronchus,oval or lobulated masses with smooth edge,slight enhancement,gen-erally with calcification,but few showed invasive growth .