Published in:
01-12-2020 | Case Reports
Adenoid Cystic Carcinoma with Transformation to High Grade Carcinomatous and Sarcomatoid Components: A Rare Case Report with Review of Literature
Authors:
Anupurva Dutta, Pattatheyil Arun, Indu Arun
Published in:
Head and Neck Pathology
|
Issue 4/2020
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Abstract
Adenoid cystic carcinoma (AdCC) comprises of less than 1% of all head and neck cancers and less than 10% of all salivary gland neoplasms. Dedifferentiation/high-grade transformation (HGT) in AdCC is a rare but well known phenomenon which is associated with aggressive clinical behaviour and poor prognosis. We herein report the clinical, cytologic, histologic and immunohistochemical findings of a left submandibular gland AdCC with transformation to high grade carcinomatous and probable dedifferentiation to sarcomatoid component, occurring in a 64 year old male patient. To the author’s best knowledge, this is the first case report of such dual transformation occurring in adenoid cystic carcinoma.