Fig. 2From: Clinical and non-contrast computed tomography characteristics and disease development in patients with benign pulmonary subsolid nodules with a solid component ≤ 5 mmAbsorbable benign pulmonary subsolid nodule in a 48-year-old woman. a The initial axial lung window CT image showed a normal right upper lobe. b, c Four months later, the axial and coronal lung window CT images showed a subsolid nodule with an ill-defined margin and a target sign in the right upper lobe. d Ten months later, the axial lung window CT image showed that the nodule was resolvedBack to article page