Cancer Imaging Department, School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK.
Guy's & St Thomas' NHS Foundation Trust, London, UK.
Br J Radiol. 2023 Feb;96(1142):20220207. doi: 10.1259/bjr.20220207. Epub 2022 Sep 26.
Non-nodular incidental lung findings can broadly be categorised as airway- or airspace-related abnormalities and diffuse parenchymal abnormalities. Airway-related abnormalities include bronchial dilatation and thickening, foci of low attenuation, emphysema, and congenital variants. Diffuse parenchymal abnormalities relate to the spectrum of diffuse parenchymal lung diseases cover a spectrum from interstitial lung abnormalities (ILAs) and pulmonary cysts to established diffuse parenchymal lung abnormalities such as the idiopathic interstitial pneumonias and cystic lung diseases. In this review, we discuss the main manifestations of these incidental findings, paying attention to their prevalence and importance, descriptors to use when reporting, the limits of what can be considered "normal", and conclude each section with some pragmatic reporting recommendations. We also highlight technical and patient factors which can lead to spurious abnormalities.
非结节性偶然肺部发现大致可分为气道或气腔相关异常和弥漫性实质异常。气道相关异常包括支气管扩张和增厚、低衰减灶、肺气肿和先天性变异。弥漫性实质异常与弥漫性实质性肺疾病的范围有关,包括从间质肺异常 (ILA) 和肺囊肿到特发性间质性肺炎和囊性肺疾病等已确立的弥漫性实质异常。在这篇综述中,我们讨论了这些偶然发现的主要表现,注意它们的普遍性和重要性、报告时使用的描述符、可以被认为是“正常”的界限,并在每一节的结尾提出一些实用的报告建议。我们还强调了可能导致虚假异常的技术和患者因素。