于万钧,章春泉.膀胱副神经节瘤影像学表现[J].中国医学影像技术,2024,40(6):912~916
膀胱副神经节瘤影像学表现
Imaging manifestations of paraganglioma of urinary bladder
投稿时间:2023-10-21  修订日期:2024-02-17
DOI:10.13929/j.issn.1003-3289.2024.06.024
中文关键词:  膀胱肿瘤  嗜铬细胞瘤  诊断显像
英文关键词:urinary bladder neoplasms  pheochromocytoma  diagnostic imaging
基金项目:
作者单位E-mail
于万钧 南昌大学第二附属医院超声科, 江西 南昌 330000  
章春泉 南昌大学第二附属医院超声科, 江西 南昌 330000 jxzcq@163.com 
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中文摘要:
      目的 观察膀胱副神经节瘤(PUB)影像学表现。方法 回顾性分析经手术病理证实的9例单发PUB患者资料,其中8例接受腹部超声、6例接受盆腔CT、6例接受盆腔MR检查,观察其影像学表现。结果 9个PUB病灶均呈类圆形或椭圆形,宽基底,边界清楚,形态规则,直径14~41 mm,平均(27.3±9.1)mm;位于膀胱左侧壁2个、左前壁1个、右侧壁2个、右前壁4个。二维超声显示8个(8/8,100%)病灶均呈低回声,其中6个(6/8,75.00%)可见"膀胱黏膜线"征;CDFI显示6个(6/8,75.00%)病灶血流信号丰富,1个(1/8,12.50%)可见点、条状血流信号,1个(1/8,12.50%)无血流信号。CT显示6个(6/6,100%)病灶均呈软组织密度,其中1个(1/6,16.67%)见瘤内囊变、坏死;2个(2/6,33.33%)见"膀胱黏膜线"征。MRI显示6个病灶(6/6,100%)均位于膀胱黏膜下,"膀胱黏膜线"征均清晰可见,4个(4/6,66,67%)呈T1WI稍高信号、1个(1/6,16.67%)呈稍低信号、1个(1/6,16.67%)呈等信号,脂肪抑制T2WI 5个(5/6,83.33%)呈稍高信号、1个(1/6,16.67%)呈等信号,弥散加权成像5个(5/6,83.33%)呈高信号、1个(1/6,16.67%)呈稍高信号。增强CT及MRI病灶均见明显强化(6/6,100%)。结论 PUB影像学表现具有一定特征性,有助于诊断。
英文摘要:
      Objective To observe the imaging manifestations of paraganglioma of urinary bladder (PUB). Methods Data of 9 patients with single PUB confirmed by surgical pathology were retrospectively analyzed. Among 9 cases, 8 cases underwent abdominal ultrasonography, 6 underwent pelvic CT and 6 underwent pelvic MR examination. The imaging manifestations of PUB were observed. Results All 9 PUB lesions shaped round or ellipsoid, with wide base, clear boundary and regular shape, the diameters were 14—41 mm, with an average of (27.3±9.1)mm. Two lesions located at the left lateral wall, 1 at the left anterior wall, 2 at the right lateral wall and 4 at the right anterior wall of the bladder. Two dimensional ultrasound displayed hypoechoic lesions in all 8 cases (8/8, 100%), and "bladder mucosa line" sign was detected in 6 cases (6/8, 75.00%), while CDFI showed rich blood flow signals in 6 lesions (6/8, 75.00%), spot and strip blood flow signal in 1 lesion (1/8,12.50%) but no blood flow signal in 1 case (1/8, 12.50%). CT showed that all 6 lesions(6/6,100%) present as soft tissue densities, 1 (1/6,16.67%)with intratumoral cystic change and necrosis, while "bladder mucosa line" sign was found in 2 cases (2/6, 33.33%). MRI showed all 6 lesions (6/6, 100%) located under the bladder mucosa, and "bladder mucosa line" sign was clearly visible (6/6, 100%). Four lesions (4/6, 66.67%) present as slight hyperintensities, 1 (1/6, 16.67%) as slight hypointensity and 1 as isointense (1/6, 16.67%) on T1WI, 5 (5/6, 83.33%) as slight hyperintensity (n=5) and 1 as isointense (1/6, 16.67%) on fat suppression-T2WI, 5 (5/6, 83.33%) as high signals but 1 (1/6, 16.67%) as slightly hyperintensity on diffusion weighted imaging. Significant enhancements of lesions (6/6, 100%) were noticed on both enhanced CT and MRI. Conclusion The imaging manifestations of PUB had certain characteristics, which were helpful to diagnosis.
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