The application of CT and CT-guided percutaneous puncture biopsy in diagnosis of pneumonic type bronchio-loalveolar carcinoma / 实用放射学杂志

ABSTRACT

Objective To evaluate imaging featuers and the application value of CT-guided percutaneous puncture biopsy combined with CT in diagnosing pneumonic type of bronchio-alveolar carcinoma (BAC).Methods The features of CT findings of 14 cases with pathologically-proved pneumonic type of BAC were retrospective analyzed.Results In consolidation of the lung tissue,air bron-chogram,honeycomb or air cavity sign,multiple nodules and/or ground glass opacity,and angiogram sign in contrast-enhance scan-ning were found in 10,5,5,and 1 1 of the 14 patients,mainly manifesting in pneumonic type of BAC.The mean time-to-peak was 90 s.The pattern of time density curve (TDC)was rapidly ascending-slowly descending in 9 cases.Conclusion The significant find-ings of CT for BAC are not only air bronchogram,honeycomb or air cavity sign,multiple nodules and/or ground glass opacity,an-giogram sign but also the pattern of rapidly ascending-slowly descending TDC.CT-guided percutaneous puncture biopsy is helpful in diagnosis and differential diagnosis pneumonic type of BAC.