Korean Journal of Radiology

The Korean Society of Radiology (대한영상의학회)
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Pelvic Solitary Plasmacytoma: Computed Tomography and Magnetic Resonance Imaging Findings with Histopathologic Correlation

  • Wang, Ying (Department of Radiology, Second Affiliated Hospital, Zhejiang University School of Medicine) ;
  • Zhu, Xiu-Liang (Department of Radiology, Second Affiliated Hospital, Zhejiang University School of Medicine) ;
  • Peeroo, Mohamad Wasil (Zhejiang University School of Medicine) ;
  • Qian, Zi-Hua (Department of Radiology, Second Affiliated Hospital, Zhejiang University School of Medicine) ;
  • Shi, Dan (Department of Radiology, Second Affiliated Hospital, Zhejiang University School of Medicine) ;
  • Wei, Shu-Mei (Department of Pathology, Second Affiliated Hospital, Zhejiang University School of Medicine) ;
  • Yu, Ri-Sheng (Department of Radiology, Second Affiliated Hospital, Zhejiang University School of Medicine)
  • Received : 2014.05.20
  • Accepted : 2014.10.24
  • Published : 2015.02.01
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Abstract

Objective: To describe the imaging features of pelvic solitary plasmacytoma and to correlate them with the pathologic grade. Materials and Methods: A retrospective study was performed on the imaging features of 10 patients with a histological diagnosis of pelvic solitary plasmacytoma. The imaging studies were assessed for bone expansion, cortical destruction, signal intensity/density of soft tissue mass and enhancement manifestations, which were then correlated to the pathologic grade. Results: The imaging features of pelvic solitary plasmacytoma revealed 3 different types: multilocular type (n = 5), unilocular type (n = 2) and complete osteolytic destruction type (n = 3) on computed tomography and MRI. Pathologically, the tumors were classified into low, intermediate and high grades. Features such as multilocular change, perilesional osteosclerosis, slight expansion, local bone cortex disruptions and masses inside bone destruction, often suggest a low-grade solitary plasmacytoma; complete osteolytic destruction, huge soft tissue mass, and osseous defects imply a higher pathologic grade. Conclusion: Pelvic solitary plasmacytoma has various imaging manifestations, while a slight expansile osteolytic feature with multilocular change or homogeneous enhancement highly suggests its diagnosis. The distinctive imaging features of pelvic solitary plasmacytoma are well correlated to the pathologic grade.

Keywords

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