Abstract
Soft-tissue tumors account for less than 4% of all tumors in adult patients and 7–10% of all tumors in pediatric age group. The majority of these tumors are benign in nature (more than 99%). Different imaging modalities play a significant role in the diagnosis, treatment, and follow-up of these tumors. In this chapter, we will try to cover the imaging appearances of different benign soft-tissue tumors and to demonstrate the differentiation features. In addition, we will demonstrate a systematic approach for the characterization of soft-tissue masses based on different imaging appearances.