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The incidence and diagnostic relevance of chemical shift artefact in the magnetic resonance imaging characterisation of superficial soft tissue masses.

化学位移伪影在浅表软组织肿块磁共振成像特征中的发生率和诊断相关性。

  • 影响因子:2.12
  • DOI:10.1259/bjr.20190828
  • 作者列表:"Saifuddin A","Siddiqui S","Pressney I","Khoo M
  • 发表时间:2020-04-01
Abstract

OBJECTIVE:Chemical shift artefact (CSA) is often encountered during MRI evaluation of superficial soft tissue masses. The study aim was to determine the incidence and diagnostic relevance of CSA in a consecutive series of superficial soft tissue masses referred to a specialist musculoskeletal sarcoma service. METHODS:All patients referred over a 6 month period with a non-lipomatous superficial soft tissue mass were prospectively analysed. Patients characteristics (age, gender), lesion features (anatomical location, size, relationship to the skin and deep fascia), presence of CSA and final histopathological diagnosis were collected. The presence of CSA was statistically analysed against these clinical, imaging and histopathological variables. RESULTS:128 patients fulfilled the inclusion criteria [63 males, 65 females; mean age = 50.6 years (7-96 years)]. CSA was present in 50 cases (39.1%) overall, but in 39 (41.5%) of 94 cases with histological diagnosis. There was no statistically significant relationship to any assessed variable apart from relationship to the deep fascia, CSA being more frequent in lesions contacting the fascia compared to lesions contacting both skin and fascia (p-value 0.02). In particular, the presence of CSA did not allow differentiation between non-malignant and malignant lesions. CONCLUSION:The presence of CSA is a not infrequent finding in the MRI assessment of superficial soft tissue masses but does not appear to be of any significance in differentiating between non-malignant and malignant lesions. ADVANCES IN KNOWLEDGE:CSA is a relatively common finding in association with superficial soft tissue masses, but does not indicate a particular histological diagnosis or help in the differentiation of non-malignant from malignant lesions.

摘要

目的: 化学位移伪影 (CSA) 在浅表软组织肿块的MRI评价中经常遇到。本研究旨在确定CSA在转诊至专科肌肉骨骼肉瘤服务的一系列连续浅表软组织肿块中的发生率和诊断相关性。 方法: 对所有非脂肪瘤性浅表软组织肿块患者进行前瞻性分析。收集患者特征 (年龄、性别) 、病变特征 (解剖位置、大小、与皮肤和深筋膜的关系) 、是否存在CSA以及最终的组织病理学诊断。根据这些临床、影像学和组织病理学变量对CSA的存在进行统计学分析。 结果: 128 例患者符合纳入标准 [63 例男性,65 例女性; 平均年龄 = 50.6 岁 (7-96 岁)]。CSA总体存在 50 例 (39.1%),但在 94 例组织学诊断的病例中 39 例 (41.5%)。除了与深筋膜的关系之外,与任何评估变量没有统计学显著关系,CSA在接触筋膜的病变中比接触皮肤和筋膜的病变更常见 (p值 0.02)。特别是,CSA的存在不允许区分非恶性和恶性病变。 结论: 在浅表软组织肿块的MRI评估中,CSA的存在并不少见,但在鉴别非恶性和恶性病变方面似乎没有任何意义。 知识进展: CSA是与浅表软组织肿块相关的相对常见的发现,但并不表明特定的组织学诊断或有助于非恶性和恶性病变的鉴别。

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影响因子:0.96
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皮肤肿瘤方向

皮肤肿瘤是发生在皮肤的细胞增生性疾病,是一种常见病。发生于皮内或皮下组织的新生物,种类很多,临床上分良性肿瘤和恶性肿瘤。恶性肿瘤可以不断增殖,引起转移,威胁生命,称为皮肤癌。

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