Pulmonary Alveolar Proteinosis in Association with Congenital Dyserythropoietic Anemia: A Case Report
Figure 2
Evidence of pulmonary alveolar proteinosis: papanicolaou stain of bronchoalveolar lavage (BAL) fluid at medium power (20x) view showing large, amorphous, acellular aggregates with a pulmonary macrophage adjacent to an aggregate in a background of chronic inflammatory cells (a). Periodic acid-Schiff (PAS) histochemical stain of BAL fluid at high power (40x) highlights both the large extracellular amorphous aggregates as well as material within pulmonary macrophages (b).
