Clinical Note |

Bilateral Canalicular Adenoma of the Parotid Gland

Benjamin D. Liess, MD; Robert V. Lane, MD; Shellaine Frazier, DO; Robert P. Zitsch III, MD
Arch Otolaryngol Head Neck Surg. 2006;132(3):339-341. doi:10.1001/archotol.132.3.339.
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Canalicular adenoma is a rare benign salivary gland tumor that occurs almost exclusively in the upper lip. Rarely, this benign tumor may occur multifocally in the oral cavity. We report a case of canalicular adenoma in bilateral parotid glands, discuss histological characteristics, and review this tumor.

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Photomicrographs of the left parotid gland. A, Encapsulated lobular neoplasm (hematoxylin-eosin, original magnification ×4). B, Monomorphic cuboidal cells with a moderate amount of eosinophilic cytoplasm. The cells form ductlike structures and cords. The background stroma is hypocellular and ranges from pale eosinophilic to lightly basophilic (hematoxylin-eosin, original magnification ×40).

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