子宫腺肌症常见和不常见的MRI表现中英文对照 何杰.pptVIP

. Figure 11. Subserosal adenomyosis-like lesionin a 41-year-old woman. 一个41岁的女性，浆膜下子宫腺肌样病变的患者 Sagittal T2-weighted fast spin-echo MR image shows a low-signal-intensity adenomyosislike lesion (arrow) situated in the subserosal region apart from the junctional zone. The lesion may be due to myometrial involvement by pelvic endometriosis. The uterus is deformed due to adhesions. EM = endometrioma. 矢状位T2加权快速自选回波MR像显示除了结合带还有位于浆膜下的低信号强度腺肌样病变，这个病变可能是由于盆腔子宫内膜异位症侵入到肌层。子宫由于粘连而变形 Pitfalls in Diagnosis Some primary or secondary malignant tumors may appear as ill-demarcated myometrial masses with uterine enlargement, findings that mimic adenomyosis. LG-ESS is a rare malignant mesenchymal tumor affecting young women and usually occurs in the endometrium with extensive myometrial invasion. LG-ESS may occasionally be situated almost within the myometrium . 有些原发性或继发性的恶性肿瘤可能会出现边界不清的肌层内肿块伴随子宫增大，表现类似于子宫腺肌症。LG-ESSS是一种罕见的发生于年轻女性的恶性间质瘤，通常发生于子宫内膜并伴随着广泛的肌层浸润 Myometrial invasion by LG-ESS is very infiltrative, and preserved low-signal-intensity muscle bundles within the high-signal-intensity tumor on T2-weighted images are a characteristic MR imaging finding . However, intramyometrial tumor may simulate adenomyosis, and preoperative diagnosis is occasionally difficult . LG-ESS的肌层浸润的程度是很深的，MRI上特征性的影像表现是T2WI上低信号强度的肌束内有高信号强度的肿瘤。然而肌层内的肿瘤类似于子宫腺肌症，术前诊断有时候是很困难的 Pitfalls in Diagnosis High-resolution T2-weighted imaging at 3 T is helpful for diagnosis of LG-ESS by demonstrating preserved fine muscular fibers within the tumor as wormlike low-signal-intensity structures (Fig 13). 3T高分辨T2加权成像对诊断LG-ESS是有帮助的，其表现是肿瘤内的细肌纤维呈现为蠕虫状的低信号。 High signal intensity with decreased ADC at diffusion weighted imaging and a high choline peak at MR spectroscopy are other clues for diagnosis of this rare malignant tumor (Fig 13) . 扩散加权成像上的高信号强度伴随ADC值的下降，MR波谱上高的胆碱峰是诊断这种罕见恶性肿瘤的别的线索 Diffusion weighted imaging is also useful in evaluating tumor extension along the vessels, which is another characterist