Ahlawat Shivani, Fayad Laura M
The Johns Hopkins University School of Medicine, USA.
Pol J Radiol. 2020 Aug 3;85:e396-e408. doi: 10.5114/pjr.2020.98685. eCollection 2020.
The World Health Organisation (WHO) classification categorises musculoskeletal soft tissue tumours (STT) based on their similarity to normal adult tissue. The most recent WHO classification provides an updated scheme that integrates biological behaviour as a distinguishing feature in each subcategory; STTs are further subdivided as benign, intermediate (locally aggressive or rarely metastasising), and malignant. Although malignant STTs are infrequent in routine orthopaedic radiology practice, musculoskeletal radiologists must be familiar with the imaging appearance of malignant STTs and distinguish them from their benign counterparts for appropriate management. Magnetic resonance imaging (MRI) is the ideal modality for the detection, characterisation, and local staging of STT. This review will discuss the most recent updates to the WHO classification of STT that are relevant to radiologists in a routine clinical practice with MRI correlation. The utility of advanced MRI sequences such as diffusion weighted imaging, dynamic contrast enhanced sequences, and magnetic resonance spectroscopy to provide insight into the biological behaviour of various STTs is highlighted.
世界卫生组织（WHO）的分类是根据肌肉骨骼软组织肿瘤（STT）与正常成人组织的相似性对其进行分类的。最新的WHO分类提供了一个更新的方案，将生物学行为作为每个亚类的一个显著特征；STT进一步细分为良性、中间型（局部侵袭性或很少转移）和恶性。尽管在常规骨科放射学实践中恶性STT并不常见，但肌肉骨骼放射科医生必须熟悉恶性STT的影像学表现，并将它们与良性对应物区分开来，以便进行适当的管理。磁共振成像（MRI）是检测、表征和对STT进行局部分期的理想检查方法。本综述将讨论WHO对STT分类的最新更新，这些更新与常规临床实践中使用MRI的放射科医生相关。重点介绍了扩散加权成像、动态对比增强序列和磁共振波谱等先进MRI序列在洞察各种STT生物学行为方面的作用。
