Magnetic resonance imaging of soft-tissue tumors of the extremities: A practical approach

• 作者: Wing P Chan
• 来源期刊: 世界放射学杂志：英文版（电子版）
• 学科: 医学
• 关键词: EXTREMITY Magnetic resonance imaging MUSCULOSKELETAL NEOPLASM SARCOMA SOFT-TISSUE tumors
• 年，卷（期）: 2013,（12）
• 页码范围: 455-459
• 页数: 5页
• 分类号: R738

摘要

Diagnosis of extremity soft-tissue tumors can be challenging.Characteristics of tumor margins can help precisely identify locally aggressive or non-aggressive behavior for surgical planning,but cannot differentiate benign from malignant lesions.Most malignant tumors can have inhomogeneous signals on T2-weighted images.Although a uniform signal on T2-weighted images can be a reliable indication of a benign lesion,a well-defined mass with homogeneous internal signal intensity does not definitively identify a benign lesion.Some common and distinctive soft-tissue lesions can have specific clinical and imaging features allowing a diagnosis without biopsy.These are known as determinate lesions.This illustrative report presents a diagnostic guide for extremity soft-tissue tumors based on tissue signal and morphological characteristics on magnetic resonance images.It is important for clinicians to be familiar with the imaging characteristics of common determinate lesions.