Pulmonary nodule Subsolid pulmonary nodule 2021-01-30T22:17:33Z Pulmonary subsolid nodules (SSNs) refer to pulmonary nodules with pure ground-glass nodules and part-solid ground-glass nodules. A ground-glass nodule (GGN) is the morphologic description of a pulmonary nodule category on thin-section chest computed tomography (CT). During the past decade, the natural history, management strategy and long-term prognosis in the case of GGNs have attracted attention.