Department of Pathology, University of Oklahoma Health Sciences Center
A 50 year-old Man with a Rapidly Enlarging Parotid Mass
Clinical information: The patient was a 50 year old man who had a 5 cm parotid mass for a long but uncertain length of time. He complained of recent enlargement of the mass and tenderness. The following photomicrographs were taken from the surgically excised specimen.
Click thumbnails
to see pictures.
The minority of the mass has histologic features of Panel A, B, and C. The majority of the mass has histologic features of panel D, E, F, G, H, and I. Panel J is Immunohistochemistry for cytokeratin 7, Panel K is Immunohistochemistry for epithelial membrane antigen (EMA), and panel L is immunohistochemistry for Her2-Neu. Immunohistochemistry for cytokeratin 20 is negative.
What is your diagnosis? DiscussionCases of the Month Evaluation Coordinator: KarMing-Fung@ouhsc.edu