CT Manifestations and Pathological Features of Pneumonia-type Lung Cancer / 中国医学影像学杂志

ABSTRACT

Purpose To explore the CT manifestations and pathological features of pneumonia-type lung cancer, and to improve the diagnosis capability of pneumonia-type lung cancer. Materials and Methods CT and pathologic features of 33 cases of biopsy or surgical pathology confirmed pneumonia-type lung cancer patients were retrospectively analyzed and classified according to the new pulmonary adenocarcinoma classification. Results Among the 33 pneumonia-type lung cancer subjects, CT showed multiple distributions within both lungs in 22 cases, lateral lobe distribution in 9 cases, segmental distribution in 2 cases. Lung consolidation was found in all lesions, among them 21 cases appeared mainly as lower lobe consolidation, 32 cases as inflatable bronchial symptoms within the consolidation, including inflatable bronchoconstriction in 24 cases;consolidation with multiple pulmonary nodules found in 23 cases;ground glass shadowing around or distal to the consolidation found in 26 cases;combined with cysts or honeycomb lung symptom in 13 cases. Inhomogeneous mild enhancement of lung consolidation after enhancement found in 18 cases and inhomogeneous moderate enhancement in 15 cases;blood vessel branch shadow within the consolidation was visible in 21 cases. Pathology results revealed 26 cases of invasive mucinous adenocarcinoma, and 7 cases of invasive mucinous adenocarcinoma partial mixed with papillary or alveolar adenocarcinoma. Conclusion CT features of pneumonia-type lung cancer are single or multiple opacities, within which inflatable bronchial symptoms can be observed, with multiple nodules and ground glass shadowing, cysts or honeycomb symptom can also be found concomitant, the lesions expand, increase and spread to both lungs, taking its dynamic change features into consideration will also help to improve the diagnostic accuracy.