| MRI findings of mucoepidermois carcinoma of the parotid gland: correlation with pathological features. | |
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MedLine Citation:
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PMID: 21896663 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Objective: The aim of this study was to correlate the MRI appearance and pathological findings in each grade of the mucoepidermoid carcinoma (MEC) of the parotid gland. Methods: We reviewed surgically proven MECs of parotid glands in 20 patients. Pathologically, 5 tumours were high-grade, 3 were intermediate and 12 were low-grade. MR images were evaluated with emphasis on signal intensities on T(2) weighted images, margin characteristics and lymph node metastasis, correlating these with pathological features. Results: Among the high-grade MECs, four out of five tumours showed inhomogeneous low to intermediate signal intensity on T(2) weighted images, reflecting high cellularity. All tumours had an ill-defined margin, reflecting invasive tumour growth. Among the intermediate-grade MECs, all three tumours showed intermediate signal intensity on T(2) weighted images and two tumours had an ill-defined margin. Among the low-grade MECs, 11 of the 12 tumours had a hyperintense area on T(2) weighted images because of the existence of abundant mucin secreting cells. Seven tumours had an ill-defined margin, reflecting peritumoural inflammatory changes rather than invasive tumour growth. Lymph node metastasis was seen in three high-grade MECs. Conclusion: MECs of the parotid gland show variable MRI findings reflecting their histological nature, which seems to have certain tendencies depending on the tumour grade. |
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Authors:
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N Kashiwagi; K Dote; K Kawano; Y Tomita; T Murakami; K Nakanishi; Y Araki; K Mori; N Tomiyama |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-9-6 |
Journal Detail:
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Title: The British journal of radiology Volume: - ISSN: 1748-880X ISO Abbreviation: - Publication Date: 2011 Sep |
Date Detail:
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Created Date: 2011-9-7 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0373125 Medline TA: Br J Radiol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Radiology, Kinki University School of Medicine, Osakasayama-city, Osaka, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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