"pulmonary vasculitides (GGO may correspond to perivascular inflammation or haemorrhage)"
"pulmonary arterial hypertension (particularly PVOD)"
"Centrilobular lung nodules are an HRCT chest imaging descriptor for 5-10 mm lung nodules anatomically located centrally within secondary pulmonary lobules. The term is applied based on the nodule's location, not its morphology; they may appear as well-defined solid or poorly defined ground-glass nodules. If extremely small, they are termed centrilobular micronodules (diameter"