| CASE REPORT |
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| Year : 2020 | Volume
: 28
| Issue : 3 | Page : 188-191 |
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Concurrence of pigmented villonodular synovitis with calcium pyrophosphate deposition in a postacute stroke patient
Shiau-Fu Hsieh1, Shu-Yih Wu2, Yu-Chung Hung3, Guo-Shou Wang4
1 Department of Physical and Rehabilitation Medicine, MacKay Memorial Hospital, Taipei, Taiwan
2 Department of Physical and Rehabilitation Medicine, Asia University Hospital, Taichung, Taiwan
3 Department of Radiology, Cheng Hsin General Hospital, Taipei, Taiwan
4 Department of Orthopaedics Surgery, MacKay Memorial Hospital, Taipei, Taiwan
Correspondence Address:
Dr. Shiau-Fu Hsieh
No. 92, Section 2, Chung-Shan North Road, Taipei
Taiwan
 Source of Support: None, Conflict of Interest: None
DOI: 10.4103/JMU.JMU_107_19
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Pigmented villonodular synovitis (PVNS) is a rare synovial proliferative disease featuring hemosiderin deposits. Calcium pyrophosphate deposition (CPPD) is a crystal-induced inflammatory arthritis common in the elderly. We reported the case of a 78-year-old male who was under stroke rehabilitation when acute inflammatory and hemorrhagic knee arthritis of his paretic lower limb occurred. CPPD was proven by synovial analysis. Ultrasonography showed widespread synovial nodular lesions in the affected knee and helped guiding difficult arthrocentesis. These led to a rapid diagnosis of PVNS with magnetic resonance imaging. In elderly stroke patients, knee pain, being a common complaint, warrants a careful diagnosis including adequate imaging. This case demonstrates that ultrasonography is an accessible and useful diagnostic tool.
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