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MR features of pelvic solitary fibrous tumor with pathological correlation
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- Author:
- No author available
- Journal Title:
- Chinese Journal of Radiology
- Issue:
- 1
- DOI:
- 10.3760/cma.j.issn.1005-1201.2014.01.013
- Key Word:
- 盆腔肿瘤;纤维瘤;磁共振成像;Pelvic neoplasms;Fibroma;Magnetic resonance imaging
Abstract： 目的 探讨盆腔孤立性纤维瘤(SFT)的MR特征及与病理表现的关系.方法 回顾性分析手术病理证实的13例盆腔孤立性纤维瘤患者资料,将MR图像中出现不同信号的区域与组织病理学检查结果进行对照分析.患者术前均行MR平扫加增强检查,并行盆腔DSA检查了解肿瘤的血供情况.结果 MR图像显示肿瘤最大径10 ～ 17 cm,中位最大径14 cm,分叶显著,边界清晰,内部及周边可见血管流空信号.肿瘤内部在T1WI和T2WI图像上存在不同强度信号的4类结节:Ⅰ类结节:T1WI等信号、T2WI等信号,增强后无强化或轻度强化;Ⅱ类结节:T1WI等信号、T2WI等高信号,增强后中度强化;Ⅲ类结节:T1WI等低信号、T2WI高信号,增强后显著强化;Ⅳ类结节:T1WI等高信号、T2WI高信号,增强后显著强化.4类结节共存2例,3类结节共存10例,2类结节共存1例.DSA示13例肿瘤供血血管丰富,无明显的动静脉瘘.肿瘤大体标本分叶明显,边界清晰,内部呈现多结节的灰白色或灰黄色肿块.不同结节内肿瘤细胞分化程度不同,血管结构的密集程度也不相同.结论 内部具有血管流空信号和不同信号及强化程度的多结节结构为盆腔孤立性纤维瘤的MR特征,这些特征与其病理表现相关.
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