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Clinical Challenge | Pathology

New Facial Weakness After 5 Years of Facial Asymmetry QUIZ ONLINE FIRST

Garrison Pease, MD1; Glenda L. Montague, MD2; Mihir K. Bhayani, MD3
[+] Author Affiliations
1Department of Pathology and Laboratory Medicine, NorthShore University HealthSystem, Evanston, Illinois
2Section of Otolaryngology–Head and Neck Surgery, Department of Surgery, University of Chicago, Chicago, Illinois
3Division of Otolaryngology, NorthShore University HealthSystem, Evanston, Illinois
JAMA Otolaryngol Head Neck Surg. Published online February 18, 2016. doi:10.1001/jamaoto.2015.3289
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A man presented with a 5-year progression of facial asymmetry and a 2-week history of left-sided facial weakness, pain, and otalgia; a biopsy revealed dense subcutaneous tissue overlying and invading the parotid gland. What is your diagnosis?

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A-C, Histopathologic images. A, Tumor infiltrating around and within the parotid gland. B, Fusiform tumor cells arranged in a storiform pattern. C, Tumor cells strongly positive for CD34. D, Image from FISH studies.

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The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
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