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01-03-2020 | Lipoma | Case Report

Primary Pleomorphic Lipoma of the Parotid Gland with Prominent Myxoid Change: Report of a Rare Case Mimicking Carcinoma Ex Pleomorphic Adenoma on Fine Needle Aspiration Cytology

Authors: Giap Hean Goh, Thomas Choudary Putti, Raymond Ngo, Abbas Agaimy, Fredrik Petersson

Published in: Head and Neck Pathology | Issue 1/2020

Abstract

We present a case of a primary 2.5 cm pleomorphic lipoma of the right parotid gland with prominent myxoid change which on FNA displayed features that mimicked a carcinoma or sarcoma ex pleomorphic adenoma. The patient was a 79 year old man with no oncological history or tumor elsewhere. On immunohistochemistry the neoplastic cells strongly expressed CD34. There was no expression of retinoblastoma protein, smooth muscle actin, S100-protein or cytokeratins (AE1/3 and CAM5.2). The Ki-67 proliferation index was low (< 2%). Fluorescence in situ hybridization was negative for MDM2 gene amplification.

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Title: Primary Pleomorphic Lipoma of the Parotid Gland with Prominent Myxoid Change: Report of a Rare Case Mimicking Carcinoma Ex Pleomorphic Adenoma on Fine Needle Aspiration Cytology
Authors: Giap Hean Goh
Thomas Choudary Putti
Raymond Ngo
Abbas Agaimy
Fredrik Petersson
Publication date: 01-03-2020
Publisher: Springer US
Keywords: Lipoma
Fluorescence in Situ Hybridization
Lipoma
Liposarcoma
Foreign Body Aspiration
Retinoblastoma
Foreign Body Aspiration
Aspiration
Retinoblastoma
Published in: Head and Neck Pathology / Issue 1/2020
Electronic ISSN: 1936-0568
DOI: https://doi.org/10.1007/s12105-018-00998-9

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Primary Pleomorphic Lipoma of the Parotid Gland with Prominent Myxoid Change: Report of a Rare Case Mimicking Carcinoma Ex Pleomorphic Adenoma on Fine Needle Aspiration Cytology

Abstract

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Abstract

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