Investigative Magnetic Resonance Imaging

Korean Society of Magnetic Resonance in Medicine (대한자기공명의과학회)
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Temporal Evolution of a Chronic Expanding Organizing Hematoma on MRI, Including Functional MR Imaging Techniques: a Case Report

  • Lee, Jeonghyun (Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Lee, Taebum (Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Oh, Eunsun (Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Yoon, Young Cheol (Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine)
  • Received : 2016.12.22
  • Accepted : 2017.03.06
  • Published : 2017.03.30
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Abstract

Chronic expanding organizing hematoma (CEH) occasionally mimics a soft tissue tumor on MRI, which becomes more problematic in patients with a history of surgical resection for musculoskeletal malignancy. Herein, we present a case of CEH which we were able to differentiate from recurrent tumor through MRI follow-up, including diffusion-weighted imaging (DWI) and dynamic contrast enhanced (DCE) imaging. A 66-year-old male visited our institution under suspicion of recurrent leiomyosarcoma of the thigh, 19 months after surgery and radiation therapy. Due to inconclusive results, three US-guided biopsies and 6 MRI examinations were performed over 2 years. In the end, we could diagnose a CEH using conventional and functional MRI techniques, and it was histopathologically confirmed after surgical resection. A CEH may occur remotely after an initiating event, and it may persist and expand over several years. Functional MR sequences, in addition to conventional sequences, are helpful in differentiating CEH from malignant neoplasms.

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References

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