Abstract
There is currently an attempt to establish a categorization system for ground-glass nodules to guide the management and prognosis of pulmonary adenocarcinoma, based on multidisciplinary consensus. Ground-glass lesions can present as part of various pathologic entities, including tumors, infections, focal hemorrhage, and focal interstitial fibrosis. Imaging features from a single CT examination are not sufficient for a definitive diagnosis of the lesions. Comparative studies with routine imaging follow-up are helpful for differentiation, particularly when a patient’s clinical status is considered. Rich vasculature within and/or around ground-glass nodules (GGNs) can form the characteristic “CTA-TA” sign during enhancement CT imaging. As a significant point of distinction and one of several key differentiation points between AIS and AAH, the CTA-TA sign will be discussed in detail in this chapter.
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Zhang, G., Zheng, X. (2018). Pure Ground-Glass Nodules. In: Zheng, X., Li, M., Zhang, G. (eds) Early-stage Lung Cancer. Springer, Singapore. https://doi.org/10.1007/978-981-10-7596-4_6
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