Fig. 3From: Clinical and non-contrast computed tomography characteristics and disease development in patients with benign pulmonary subsolid nodules with a solid component ≤ 5 mmNonabsorbable benign pulmonary subsolid nodule in a 60-year-old man. a, b The initial axial and coronal lung window CT images showed a subsolid nodule with a well-defined margin and a target sign in the right upper lobe. c Three months later, the axial lung window CT image showed nodule persistence. d Photomicrography (hematoxylin and eosin staining; magnification × 200) confirmed the presence of an inflammatory noduleBack to article page