| Pigmented villonodular synovitis of the ankle: radiologic characteristics. | |
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MedLine Citation:
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PMID: 21622637 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Background: Pigmented villonodular synovitis (PVNS) of the ankle is a rare benign proliferative growth of the synovium. Studies of the radiologic characteristics of ankle PVNS are sparse. Methods: To characterize the radiologic features of ankle PVNS, five patients with histologically proven ankle PVNS were retrospectively studied. The features of their radiographs, computed tomographic scans, and magnetic resonance images were reviewed, with emphasis on the morphological features, extension, margin, bone involvement, signal intensity, and degree of magnetic resonance enhancement. Results: All five lesions were diffuse, affecting the ankle and distal tibiofibular joint; three lesions also involved the subtalar joint. Radiography demonstrated extrinsic bone erosions with marginal sclerosis of the involved joints in all of the patients, but computed tomography identified this much better than did radiography. Magnetic resonance imaging revealed multiple lobulated soft-tissue masses in all of the cases. These soft-tissue masses surrounded the flexor hallux longus tendon and were hypointense on T1-weighted images, with a heterogeneous signal in two cases and homogenous hypointensity in three cases on fat-suppressed T2-weighted images. In one patient who underwent gadolinium-enhanced imaging, the masses showed intense enhancement. Conclusions: Magnetic resonance imaging is the best way to reveal ankle PVNS. Magnetic resonance imaging findings of predominant hypointensity on all pulse sequences and standard radiography findings of bone erosion with marginal sclerosis are characteristic. |
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Authors:
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Da-Peng Hao; Jian-Zhong Zhang; Wen-Jian Xu; Zhen-Chang Wang; Xue-Na Wang |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of the American Podiatric Medical Association Volume: 101 ISSN: 1930-8264 ISO Abbreviation: J Am Podiatr Med Assoc Publication Date: 2011 May-Jun |
Date Detail:
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Created Date: 2011-05-30 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8501423 Medline TA: J Am Podiatr Med Assoc Country: United States |
Other Details:
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Languages: eng Pagination: 252-8 Citation Subset: IM |
Affiliation:
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Radiology Department, Affiliated Hospital of Medical College Qingdao University, Qingdao, Shandong, China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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