Dynamic High-Spatial-Resolution MR Imaging of Invasive Ductal Carcinoma : Influence of Histological Scirrhous Component on MR Descriptors
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概要
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Purpose: The purpose of this study was to assess the relationship between the amount of scirrhous component in invasive ductal carcinoma and its MR characteristics. Materials and Methods: We retrospectively reviewed 71 consecutive patients with invasive ductal carcinoma smaller than 25 mm (average, 16.6 mm) in diameter. The scirrhous component was defined as invasive foci in small clusters of cancer cells showing desmoplasia. Invasive ductal carcinoma was subclassified into 3 groups in accordance with the amount of the scirrhous component (scirrhous component degree; SCD): SCD I (scirrhous component less than 20%), SCD II (intermediate), and SCD III (more than 80%). Dynamic magnetic resonance (MR) imaging was performed using volumetric interpolated sequence. Prior to dynamic study, T2*-weighted first-pass perfusion images were obtained before, during, and after bolus injection of 0.1 mmol Gd-DTPA/kg. Results: Twenty-eight lesions were classified as SCD I, 14 as SCD II, and 29 as SCD III. Mass margin and signal intensity loss in the perfusion study were significantly different among the 3 SCD groups (P<0.001). The kinetic patterns were significantly different among the 3 SCD groups (P=0.04), and between SCD I/II and SCD III (P=0.03). The presence of enhancing internal septations was significantly different between SCD I/II and SCD III carcinomas (P=0.05). Central enhancement was only observed in SCD I carcinoma (4%; 3/71). Conclusion: The histological predominance of the scirrhous component in invasive ductal carcinoma may be one explanation for the differences in morphologic and kinetic patterns on MR imaging.
- 日本磁気共鳴医学会の論文
- 2006-10-01
著者
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戸崎 光宏
東京慈恵会医科大学放射線医学講座
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戸崎 光宏
東京慈恵会医科大学附属第三病院放射線科
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Fukuda Kunihiko
Department of Radiology, Jikei University School of Medicine
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SUZUKI Masafumi
Department of Electrical and Electronic Engineering, Akita University
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TOZAKI Mitsuhiro
Division of Diagnostic Imaging, Breast Center, Kameda Medical Center
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Tozaki Mitsuhiro
Division Of Diagnostic Imaging Breast Center Kameda Medical Center
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Suzuki Masafumi
Department Of Electrical And Electronic Engineering Akita University
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Suzuki Masafumi
Department Of Pathology The Jikei University School Of Medicine
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Fukuda Kunihiko
Department Of Radiology And Dentistry Jikei University School Of Medicine
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Suzuki Masafumi
Department Of Biology Miyagi College Of Education
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