PMC4019746_01
Coronal CT (A) and T1 fat suppressed MRI with gadolinium (B) images demonstrating a soft tissue mass in the posterior ethmoid sinuses.
arh0011400850001.jpg
PMC4019746_01_arh0011400850001.jpg
F1
Hematoxylin and Eosin staining demonstrates diffuse inflitrate of neoplastic cells with blastic chromatin pattern.
arh0011400850002.jpg
PMC4019746_01_arh0011400850002.jpg
F2
Routine hematoxylin and eosin staining showed a diffuse infiltrate of neoplastic medium-sized cells with slightly irregular nuclear contours, blastic chromatin pattern, inconspicuous nucleoli, and scant agranular cytoplasm (Fig. 2).
Positive staining for CD123.
arh0011400850003.jpg
PMC4019746_01_arh0011400850003.jpg
F3
An immunoperoxidase stain for CD123 was uniformly positive in neoplastic cells (Fig. 3).