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  • Title: Magnetic resonance imaging evaluation and arthroscopic resection of localized pigmented villonodular synovitis of the knee.
    Author: Muscolo DL, Makino A, Costa-Paz M, Ayerza M.
    Journal: Orthopedics; 2000 Apr; 23(4):367-9. PubMed ID: 10791586.
    Abstract:
    Diagnosis of localized pigmented villonodular synovitis is clinically difficult, and plain radiographs are usually normal. This article presents five patients with localized pigmented villonodular synovitis of the knee. Symptoms suggested a meniscal lesion in three patients and a loose body in two. Magnetic resonance imaging performed prior to arthroscopic resection revealed a preoperative diagnosis of a tumor in all five patients. Magnetic resonance imaging is a valuable clinical tool for the assessment of intra-articular soft-tissue tumors of the knee that may otherwise be misdiagnosed.
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