Fig. 4From: Adenocarcinoma in situ and minimally invasive adenocarcinoma in lungs of smokers: image feature differences from those in lungs of non-smokersAdenocarcinoma in situ (AIS) (a) and minimally invasive adenocarcinoma (MIA) (b) arising from a non-smoker’s lung. The MIA arising from a non-smoker’s lung shows relatively typical radiological findings with GGO at the periphery and a solid component in the center. Conversely, AIS (c) and MIA (d) arising from a smoker’s lung show relatively low density and are difficult to differentiateBack to article page