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Squamous cell carcinoma originating in the parotid gland: MRI features with histopathological correlation.

Abstract：

AIM:To report the magnetic resonance imaging (MRI) and corresponding histopathological features of squamous cell carcinoma (SCC) originating in the parotid gland. MATERIALS AND METHODS:The MRI images of seven patients with histopathologically proven SCC originating in the parotid gland were reviewed retrospectively, with an emphasis on tumour size, shape, contour definition, extraparotid infiltration, signal characteristics, and the presence of central necrosis. These were correlated with the microscopic findings of the surgical specimens. RESULTS:The tumours ranged in size from 3.9-7 cm (mean 4.7 cm). All tumours had an ill-defined margin with extraparotid infiltration, which seemed to reflect the invasive growth of the tumour cells on histopathological examination. The solid portions of the tumours showed predominantly low to intermediate signal intensities on T2-weighted images, which seemed to reflect the high cellularity, intercellular bridges, and/or keratin pearl formation observed at histopathological examination. Five of the seven tumours had central necrosis. CONCLUSION:A relatively large tumour with central necrosis is a useful imaging feature of SCCs originating in the parotid gland, in addition to the well-recognized indicators of parotid malignancy, such as an ill-defined margin, extraparotid infiltration, and low to intermediate signal intensity on T2-weighted images.

journal_name

Clin Radiol

journal_title

Clinical radiology

authors

Takahashi H,Kashiwagi N,Chikugo T,Nakanishi K,Tomita Y,Murakami T

doi

10.1016/j.crad.2013.08.002

subject

Has Abstract

pub_date

2014-01-01 00:00:00

pages

41-4

issue

1

eissn

0009-9260

issn

1365-229X

pii

S0009-9260(13)00413-3

journal_volume

69

pub_type

杂志文章

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