肌内黏液瘤的CT和MRI表现

发布时间：2018-01-18 06:12

本文关键词：肌内黏液瘤的CT和MRI表现　出处：《临床放射学杂志》2017年10期 　论文类型：期刊论文

【摘要】：目的探讨肌内黏液瘤的CT和MRI表现,以提高对该病的诊断水平。方法回顾性分析经手术病理证实的16例肌内黏液瘤的CT和MRI表现,其中男7例,女9例,年龄2~66岁,中位年龄47岁。对肿瘤的部位、大小、形态、边缘、信号或密度、强化方式及周围情况进行分析。结果 16例中位于四肢9例,盆部2例,胸壁2例,腹壁2例,肩部1例。最大径约2.1~11.4 cm,平均(5.1±2.3)cm。13例病灶形态规则、边界清晰,3例形态不规则、局部边界不清。6例CT平扫表现为低密度,3例周围软组织可见脂肪帽;3例CT增强扫描中,2例表现为边缘轻度环形强化,1例表现为边缘环形强化并内部结节状强化。9例病灶T_1WI表现为低信号,11例病灶T_2WI及T_2抑脂序列均表现为显著高信号;MRI增强扫描3例表现为边缘环形强化,其中2例伴分隔线状强化;1例表现为显著强化;6例不均匀轻中度强化,其中3例多期增强扫描可见渐进性强化。9例T_2抑脂系列病灶周围软组织可见水肿信号,5例T_1WI病灶周围软组织可见脂肪沉积信号。结论肌内黏液瘤的CT和MRI表现具有一定特异性,大块肌肉内类似囊样肿块,不均匀延迟强化、边缘环形强化或分隔线状强化,周围软组织伴脂肪沉积及灶周水肿,可提示肌内黏液瘤的诊断。
[Abstract]:Objective to investigate the CT and MRI findings of intramuscular myxoma in order to improve the diagnosis of myxoma. Methods CT and MRI findings of 16 cases of intramuscular myxoma proved by surgery and pathology were analyzed retrospectively. The location, size, shape, edge, signal or density, enhancement mode and surrounding conditions of the tumor were analyzed in 9 cases, aged 2 to 66 years, with a median age of 47 years. Results among the 16 cases, 9 cases were located on the extremities. There were 2 cases in the pelvic region, 2 cases in the chest wall, 2 cases in the abdominal wall and 1 case in the shoulder. The maximum diameter was about 2.1 ~ 11.4 cm, with an average of 5.1 卤2.3 cm 路13 lesions. 3 cases were irregular in shape and 6 cases had unclear local boundaries. Plain CT scan showed that 3 cases had low density and 3 cases had fat cap around the soft tissue. Among the 3 cases of CT enhancement, 2 cases showed slight circular enhancement of edge and 1 case showed marginal ring enhancement and internal nodular enhancement 9 cases showed low signal intensity on T 1WI. In 11 cases, both T2WI and T2WI showed significant hyperintense signal. MRI enhanced scan showed circumferential enhancement in 3 cases, of which 2 cases were accompanied by linear enhancement. 1 case showed marked enhancement. 6 cases were inhomogeneous, mild and moderate enhancement, among which 3 cases showed progressive enhancement in 9 cases. Soft tissue edema signal was observed around the focus of Tass 2 series of lipid-suppressive series. Fat deposition signals were found in the soft tissue around the lesions on T 1WI in 5 cases. Conclusion the CT and MRI findings of intramuscular myxoma have some specificity. The mass of muscle is similar to a cystic mass, and the enhancement is inhomogeneous and delayed. Peripheral circular enhancement or linear enhancement, peripheral soft tissue with fat deposition and perifocal edema may be useful for the diagnosis of myxoma.
【作者单位】：汕头大学医学院第一附属医院放射科;广东省医学分子影像重点实验室;广东省深圳市南方医科大学深圳医院影像诊断科;广东省汕头市中心医院磁共振室;
【基金】：国家自然科学基金项目(编号:81373745、81072905) 广东省科技计划项目(编号:2016A020215181) 广东省医学科研基金项目(编号:A2015587) 汕头市医疗科技计划项目(汕府科[2015]123号)
【分类号】：R445.2;R730.44;R738.6
【正文快照】： 本研究系国家自然科学基金项目(编号:81373745、81072905);广东省科技计划项目(编号:2016A020215181);广东省医学科研基金项目(编号:A2015587);汕头市医疗科技计划项目(汕府科[2015]123号)作者单位:515041汕头,汕头大学医学院第一附属医院放射科(乐洪波、尹晶晶、马树华);5150

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