Figure 4From: Posterior mediastinal ectopic meningioma: a case reportHematoxylin and eosin (H-E) staining shows that the tumor is composed prominently of elongated spindle cells and collagen fibers; numerous typical whorl formations and multiple psammoma bodies are observed in the tumor. Immunohistochemistry shows positive staining for epithelial membrane antigen (EMA). (Magnification shown at × 100).Back to article page