Fig. 4
From: Acute fibrinous and organising pneumonia presenting with mass-like imaging: a case report
Follow-up chest CT images two months later. (A) Patchy areas of increased density in the upper lobe of the left lung, with surrounding linear shadows, showing no significant changes compared to Fig. 3A; (B) An irregular soft tissue density mass is seen in the lower lobe of the left lung, with the largest cross-section measuring about 3.8 × 2.9 cm, which has increased in size compared to Fig. 3B