A Case of Bilateral Spontaneous Chylothorax with Respiratory Syncytial Virus Bronchiolitis

Figure 4

(A–C) Subpleural cysts lined by pneumocytes are seen in both lungs which contain macrophages, sloughed pneumocytes, and neutrophils ((A) H&E ×40 and (B) H&E ×20). (C) Immunohistochemistry with anti-D2-40 antibody, a marker for lymphatic endothelium, was negative. (D) Lung parenchyma demonstrates chronic interstitial lung disease with alveolar septal thickening, capillary disorganizing, and hemosiderosis (H&E ×40). (E) Acute bronchopneumonia is present (H&E ×40). (F) Pulmonary hypertensive changes are present with variable severities (H&E ×100).