Fig. 1
From: Pulmonary invasive mucinous adenocarcinoma mimicking pulmonary actinomycosis
The change of chest computed tomography (CT) image. a, b The chest CT showing a mass (45.5 × 45.0 mm2) in the left lower lobe before treatment of penicillin. c, d The chest CT showing narrowed mass (25.7 × 22.7 mm2) in the left lower lobe after treatment of penicillin for 2 months. e, f The chest CT showing a mass (26.2 × 25.7 mm2) with expanded ground glass opacity in the left lower lobe after treatment of penicillin for 4 months. a, c, e pulmonary window, red arrow: mass; b, d, f: mediastinal window)