A 16-Year-Old Female With Maxillary Sinus Mass

Course Authors:
Kyle L. Eskue, MD
Department of Pathology

Shawn D. Newlands, MD, PhD, MBA, FACS
Wiess Professor and Chairman, Department of Otolaryngology

Mahmoud A. Eltorky, MD, PhD
Professor and Director, Surgical Pathology, University of Texas Medical Branch, Galveston, TX

Upon completion of this activity, you will be able to:

• identify the general and specific histologic features of hemangiopericytomas.
• apply principles of immunohistochemistry for the diagnosis of hemangiopericytomas.
• discuss recent proposals on how to classify hemangiopericytomas.
• recognize the rare paraneoplastic syndrome of oncogenic osteomalacia associated with this tumor and how the syndrome presents itself.

The ASCP designates this educational activity for a maximum of 1 AMA PRA Category 1 Credits™. Physicians should only claim credit commensurate with the extent of their participation in the activity.

ASCP designates this activity for a maximum of 1 CMLE credit. This activity meets CMP and state licensure requirements for laboratory personnel.