Figure 4From: Autoimmune pulmonary alveolar proteinosis co-existing with breast cancer: a case report Histological findings of transbronchial lung biopsy specimens show the alveolar spaces to be filled with eosinophilic granular material (A; hematoxylin and eosin, ×200) and abundant intra-alveolar material that stains with periodic acid-Schiff (B; periodic acid-Schiff, ×200). Back to article page