May 2019 — Anatomic and Clinical Pathology: Case 3

A 23 year old presents to his family care physician with a five-month history of right-sided facial numbness and eyelid twitching. He is a non-smoker and has no previous malignant history. An ultrasound of his face showed a 3-4 cm hypoechoic mass in the parotid. An outside biopsy was positive for a “round blue cell tumor.” Clinically the mass was rapidly enlarging over the course of weeks-months. A CT of the mass is shown.

Abrupt keratinization
CT scan
NUT necrosis
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Photo of Casey Gleue, M.D. Casey Gleue, M.D.
Resident, Anatomic and Clinical Pathology
Mayo Clinic
Image of Joaquin Garcia, M.D. Joaquín García, M.D.
Consultant, Anatomic Pathology
Mayo Clinic
Associate Professor of Laboratory Medicine and Pathology
Mayo Clinic College of Medicine

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