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Peripheral primitive neuroectodermal tumor of the parotid gland region: Report of a case with fine-needle aspiration findings

✍ Scribed by Jay C. Helsel; Robert E. Mrak; Ehab Hanna; David H. Parham; Ricardo H. Bardales

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 381 KB
Volume: 22
Category: Article
ISSN: 8755-1039
DOI: 10.1002/(sici)1097-0339(20000301)22:3<161::aid-dc6>3.0.co;2-y

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✦ Synopsis

A case of peripheral primitive neuroectodermal tumor of the parotid gland region in a 38-yr-old woman is reported. She had a 1-yr history of a large, firm, and slightly tender left parotid-region mass. CT scan showed an invasive tumor involving the parotid gland, mandible, infratemporal fossa, and parapharyngeal space. Fine-needle aspiration cytology of the mass showed a highly cellular, poorly cohesive smear pattern exhibiting small cuboidal cells, with fibrillary cytoplasm forming occasional rosette-like structures. Numerous intact single cells with fragile cytoplasm, finely granular chromatin, and inconspicuous nucleoli were present together with free-lying nuclei in the background. Histologic, immunohistochemical, and ultrastructural findings confirmed the diagnosis.

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