Fig. 7From: Clinical and radiological features of lung disorders related to connective-tissue diseases: a pictorial essayAirway disease in RA patient, clearly depicted in A, B. Lobular decreased attenuation areas (white empty arrows) are caused by follicular bronchiolitis and obliterative bronchiolitis. This finding represents an early manifestation of disease, due to airway involvement—typically found when no fibrosing alterations are observedBack to article page