Fig. 5From: Intractable pneumothorax due to rupture of subpleural rheumatoid nodules: a case reportPathological diagnosis of the resected specimen. A subpleural rheumatoid nodule with cavitation and a defect in the pleura where the cavity had formed (a loupe image). A highly magnified view of the lesion showing fibrinoid necrosis surrounded by histiocytes and lymphocytes (b HE, × 40; c HE, × 100)Back to article page