Hypointensity on Postcontrast MR Imaging from Compression of the Sacral Promontory in Enlarged Uterus with Huge Leiomyoma and Adenomyosis
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概要
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Purpose: In patients with huge leiomyoma and with adenomyosis of the uterus, a peculiar area of hypointensity was occasionally observed on postcontrast magnetic resonance (MR) imaging in the dorsal portion of the enlarged uterus near the sacral promontory. We describe the imaging characteristics of these MR findings and correlate them with histopathological findings to examine whether the areas represent specific pathological changes. Methods: Ten patients with huge leiomyomas and two with huge adenomyotic lesions whose imaging revealed the hypointensity were enrolled. All had enlarged uteri that extended beyond the sacral promontory. MR findings of the hypointense areas were evaluated and correlated with histopathological findings in 5 patients with leiomyoma and two with adenomyosis who had hysterectomy. Results: The ten patients with leiomyoma showed flare-shaped hypointensity arising from the dorsal surface of the uterine body that extended deep into the tumor. The base of the hypointense areas was narrow in 5 patients with intramural leiomyoma and broad in five with subserosal leiomyoma. Two patients with adenomyosis showed nodular-shaped areas of hypointensity in front of the sacral promontory. Precontrast T1- and T2-weighted MR images showed no signal abnormalities in the portions corresponding to the hypointensity in any of the 12 patients. Pathological examinations showed no specific findings in the portions corresponding to the hypointensity in the 7 patients who had hysterectomy. Conclusion: The areas of hypointensity may represent functional changes, such as decreased localized blood flow caused by compression of the sacral promontory.
- 日本磁気共鳴医学会の論文
- 2007-07-01
著者
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ADACHI Shuji
Department of Radiology, Hyogo Cancer Center
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KAJI Yasushi
Department of Radiology, Dokkyo University School of Medicine
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SUGIMURA Kazuro
Department of Radiology, Kobe University Graduate School of Medicine
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Kaji Yasushi
Department Of Radiology Dokkyo University School Of Medicine
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TAKEMORI Masayuki
Department of Obstetrics and Gynecology, Hyogo Medical Center for Adults
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Uotani Kensuke
Department of Radiology, National Cardiovascular Center
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MONZAWA Shuichi
Department of Radiology, Yamanashi Medical University
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Uotani Kensuke
Department Of Radiology And Nuclear Medicine National Cardiovascular Center
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Uotani Kensuke
Department Of Radiology Hyogo Medical Center For Adults
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Sugimura Kazuro
Department Of Radiology Kobe Graduate School Of Medicine
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Monzawa Shuichi
Department Of Radiology Hyogo Cancer Center
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Kaji Yasushi
Department Of Radiology Dokkyo Medical University
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Adachi Shuji
Department Of Food Sciencc And Tethnology Faculty Of Agriculture Kyoto University
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Sugimura Kazuro
Department Of Pet Diagnosis Institute Of Biomedical Research And Innovation
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Takemori Masayuki
Department Of Gynecology Hyogo Medical Center For Adults
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SUGIMURA Kazuro
Department of Biomedical Informatics, Division of Radiology, Kobe University Graduate School of Medicine
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KAJI Yasushi
Department of Biomedical Informatics, Division of Radiology, Kobe University Graduate School of Medicine
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