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| Imaging findings and differential diagnosis of solitary plasmacytoma |
| JING Ting1, SI Guang-yan1, HE Qi-zhou1, LUO Chuan-bin1, WANG Wen-yuan2, ZHAO Jie1, LI Zhao-nan1 |
1. Department of Radiology, the Affiliated TCM Hospital of Southwest Medical University, Luzhou Sichuan 646000, China;
2. Department of Ultrasound, the Affiliated Hospital of Southwest Medical University, Luzhou Sichuan 646000, China |
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Abstract Objective: To investigate the imaging characteristics of solitary plasmacytoma, in order to improve the accuracy of diagnosis and differential diagnosis. Methods: The clinical materials and imaging data of 24 cases with solitary plasmacytoma confirmed by pathology were analyzed retrospectively. Results: Of the 24 cases, 20 cases were solitary plasmacytoma of bone(SPB), and 6 cases occured in spine, 6 cases in long bone, 5 cases in flat bone, 1 case in zygomatic bone, and 2 case in clivus. All the cases of SPB appeared as single, expansile osteolytic lesions, without periosteal reaction. Most of the SPB were remaining bone. The bone destruction region was filled with the soft tissue which can break through the cortical bone to form soft tissue mass. Four cases were extramedullary solitary plasmacytoma(EMP), and the image features were soft tissue mass and bone destruction near the lesions. MRI showed diversity of signals, and remarkable enhancement after contrast injection. Conclusion: Most of solitary plasmacytoma have some specific imaging features. Such as isolated expansive osteolytic bone destruction with remaining bone and soft tissue mass, no periosteal reaction, “mini brain” sign, “soap bubble” sign, “lace change” and obvious uniform enhancement etc.
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Received: 10 May 2017
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