Diagnostic imaging of the parotid gland tumors: Characteristic MR findings
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- Tanaka Hiroko
- Department of Diagnostic Imaging, Cancer Institute Hospital of Japanese Foundation for Cancer Research
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- Beppu Takeshi
- Department of Head and Neck, Cancer Institute Hospital of Japanese Foundation for Cancer Research
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- Sasaki Tohru
- Department of Head and Neck, Cancer Institute Hospital of Japanese Foundation for Cancer Research
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- Fukushima Hirofumi
- Department of Head and Neck, Cancer Institute Hospital of Japanese Foundation for Cancer Research
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- Yonekawa Hiroyuki
- Department of Head and Neck, Cancer Institute Hospital of Japanese Foundation for Cancer Research
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- Mitani Hiroki
- Department of Head and Neck, Cancer Institute Hospital of Japanese Foundation for Cancer Research
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- Kawabata Kazuyoshi
- Department of Head and Neck, Cancer Institute Hospital of Japanese Foundation for Cancer Research
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- Kohno Atsushi
- Department of Diagnostic Imaging, Cancer Institute Hospital of Japanese Foundation for Cancer Research
Bibliographic Information
- Other Title
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- 耳下腺腫瘍の画像診断
Description
Purpose: We report the usefulness of MR imaging in distinguishing the differential diagnosis of parotid gland tumors. Materials and Methods: We studied MR images of 95 patients with 97 tumors (63 benign tumors and 34 malignant tumors). T2-weighted images (WIs), T1WIs, contrast-enhanced T1WIs, diffusion weighted single-shot EPI images (DWIs), and dynamic-enhanced images were acquired with a 1.5-Tesla MR system and a head-neck 8-channel coil. All tumors were classified into 5 groups, which were pleomorphic adenoma (PA), Warthin's tumor, other benign tumors, carcinoma, and malignant lymphoma. Results: Benign tumors were oval or lobulated shapes with complete encapsulation. Malignant tumors were irregular shapes without encapsulation. PAs had high apparent diffusion coefficient (ADC) values higher than 2.0mm2/sec. Warthin's tumors had a characteristic time intensity curve with rapid increase and rapid decrease. Conclusions: Our data suggest that MR characteristics are helpful in the differential diagnosis of parotid gland tumors.
Journal
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- Toukeibu Gan
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Toukeibu Gan 34 (3), 365-371, 2008
Japan Society for Head and Neck Cancer
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Keywords
Details 詳細情報について
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- CRID
- 1390282680198177024
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- NII Article ID
- 130004510033
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- ISSN
- 18818382
- 13495747
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed
