Carcinosarcoma of the uterus: MR findings
Carcinosarcoma of the uterus: MR findings
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DOI：
10.1002/jmri.21469
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发表时间：
2008-08-01
影响因子：
4.4
通讯作者：
Minami, Manabu
中科院分区：
文献类型：
--
作者：
Tanaka, Yumiko O.;Tsunoda, Hajime;Minami, Manabu
目的：探讨子宫癌肉瘤的影像特点。材料与方法：回顾分析17例经手术病理证实的子宫癌肉瘤的MRI表现，包括肿瘤的大小、生长方式、信号强度、增强程度、宫外扩散等。结果：肿瘤最大直径11~165 mm，平均88 mm。9例(53%)为外生带柄生长，8例(47%)为广基外生生长。它们都没有表现出侵袭性生长。14例(82%)为等信号，3例(18%)为子宫肌层高信号。仅2例可见肿瘤内出血的极高信号区。15例(88%)T2WL上半数以上肿瘤信号高于子宫外肌层，8例(50%)无强化，13例(81%)强强化。初发时仅2例(12%)可见宫外伸展。结论：子宫癌肉瘤的影像表现以T2WL高信号为主，以长时间强化为最常见的影像特征。
Purpose: To clarify the imaging characteristics of carcinosarcomas, which are the most common malignant mixed epithelial and mesenchymal tumors (MEMTs) of the uterus.Materials and Methods: We retrospectively reviewed MR findings of 17 histopathologically confirmed cases with carcinosarcomas, including the size, growth pattern, signal intensity, contrast enhancement, and extrauterine spread in each case.Results: The maximum tumor diameter was 11-165 mm (mean 88 mm). Nine cases (53%) showed exophytic with a stalk and eight cases (47%) showed broad-based exophytic growth. None of them showed invasive growth. Fourteen cases (82%) were isointense and three cases (18%) were hyperintense to myometrium on TI-weighted images (TIWI). An extremely high intensity area suggesting intratumoral hemorrhage was seen in only two cases. In 15 cases (88%), more than half of the tumor showed higher signal intensity than the outer myometrium on T2WL Eight of the 16 cases (50%) had an unenhanced area, whereas 13 cases (81%) had a strongly enhanced area. Extrauterine extension was observed in only two cases (12%) at initial presentation.Conclusion: Uterine carcinosarcomas reveal a spectrum of imaging findings with a high signal on T2WL with a prolonged intense enhancement being the most common imaging feature.