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      Pseudotumoural soft tissue lesions of the foot and ankle: a pictorial review

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          Abstract

          In the foot and ankle region, benign neoplasms and pseudotumoural soft tissue lesions are significantly more frequent than malignant tumours. The pseudotumoural lesions constitute a heterogeneous group, with highly varied aetiology and histopathology. This article reviews the imaging features of the most common pseudotumours of the soft tissues in the foot and ankle. Although the imaging characteristics of several of the lesions discussed are non-specific, combining them with lesion location and clinical features allows the radiologist to suggest a specific diagnosis in most cases.

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          Accessory muscles: anatomy, symptoms, and radiologic evaluation.

          Paul A Sookur, Ali Naraghi, Robert R Bleakney … (2015)
          A wide array of supernumerary and accessory musculature has been described in the anatomic, surgical, and radiology literature. In the vast majority of cases, accessory muscles are asymptomatic and represent incidental findings at surgery or imaging. In some cases, however, accessory muscles may produce clinical symptoms. These symptoms may be related to a palpable swelling or may be the result of mass effect on neurovascular structures, typically in fibro-osseous tunnels. In cases in which an obvious cause for such symptoms is not evident, recognition and careful evaluation of accessory muscles may aid in diagnosis and treatment. (c) RSNA, 2008
          Article 0 comments Cited 27 times – based on 0 reviews     Review now
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            MRI findings of subcutaneous epidermal cysts: emphasis on the presence of rupture.

            Sung Hwan Hong, Hye Won Chung, Ja-Young Choi … (2006)
            Our aim was to describe the MRI findings of subcutaneous epidermal cysts with an emphasis on determining the presence of rupture. Epidermal cysts show a fluidlike signal with variable low-signal components on T2-weighted images and peripheral rim enhancement on gadolinium-enhanced images. Most ruptured cysts have septa, show thick and irregular rim enhancement, and are accompanied by a fuzzy enhancement in surrounding subcutaneous tissues. These imaging features of a ruptured epidermal cyst simulate a mass of infectious or neoplastic origin.
            Article 0 comments Cited 27 times – based on 0 reviews     Review now
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              MR imaging of tophaceous gout.

              R Jurdi, Juan Yu, T Dailiana … (1997)
              MR imaging is not routinely used for evaluation of tophaceous gout. However, gout may present clinically in an atypical, unusual, or confusing manner. A gouty tophus occasionally mimics an infectious or neoplastic process, and MR imaging may be obtained under these circumstances. The purpose of this study was to determine the MR imaging characteristics of intraosseous and soft-tissue tophi. We identified 13 MR imaging examinations performed during a 27-month period on nine patients with gouty arthritis. All were men 42-70 years old. T1-, proton density-, and T2-weighted spin-echo MR images were obtained for all the examinations. Nine examinations included contrast-enhanced MR images. The findings were then evaluated, as were the corresponding radiographs. Five patients presented with articular involvement, three patients with an isolated soft-tissue mass, and one patient with persistent soft-tissue swelling. The duration of symptoms ranged from 3 months to more than 20 years. Nearly all the tophi were of intermediate signal intensity on T1-weighted images. On T2-weighted images, three sites revealed an overall increase in the signal intensity of the tophi, whereas 10 studies showed a heterogeneous decrease in signal intensity. All but one tophus showed homogeneous enhancement. Erosion of adjacent bone, synovial pannus, joint effusion, soft-tissue edema, and bone marrow edema were common associated findings. The MR appearance of tophi in patients with tophaceous gout is constant on T1- but quite variable on T2-weighted images. This variability in signal intensity could be related to calcium within a tophus. Tophaceous gout should be considered in the differential diagnosis when a mass reveals heterogeneously low to intermediate signal intensity, particularly if the adjacent bone shows typical erosive changes or if other joints are involved. When faced with this situation, radiologists may find it helpful to obtain a further clinical history and recommend evaluating the patient's serum urate level.
              Article 0 comments Cited 24 times – based on 0 reviews     Review now
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                Author and article information

                Contributors
                : +32-496-041616 , erikvanhul@hotmail.com
                : filip.vanhoenacker@telenet.be
                Journal
                Journal ID (nlm-ta): Insights Imaging
                Journal ID (iso-abbrev): Insights Imaging
                Title: Insights into Imaging
                Publisher: Springer-Verlag (Berlin/Heidelberg )
                ISSN (Electronic): 1869-4101
                Publication date (Electronic): 1 May 2011
                Publication date PMC-release: 1 May 2011
                Publication date Collection: August 2011
                Volume: 2
                Issue: 4
                Pages: 439-452
                Affiliations
                [1 ]Department of Radiology, Antwerp University Hospital, University of Antwerp, Wilrijkstraat, 10, 2650 Edegem, Belgium
                [2 ]Department of Radiology, AZ Sint-Maarten, Rooienberg 25, 2570 Duffel, Belgium
                Article
                Publisher ID: 87
                DOI: 10.1007/s13244-011-0087-2
                PMC ID: 3259410
                PubMed ID: 22347966
                SO-VID: 33ae212e-ddcc-4b6d-a4ef-f43e485fa1b0
                Copyright © © European Society of Radiology 2011
                History
                Date received : 29 October 2010
                Date accepted : 15 February 2011
                Categories
                Subject: Pictorial Review
                Custom metadata
                issue-copyright-statement © European Society of Radiology 2011

                ScienceOpen disciplines: Radiology & Imaging
                Keywords: ankle,pseudotumours,soft tissue,foot,mri
                Data availability:
                ScienceOpen disciplines: Radiology & Imaging
                Keywords: ankle, pseudotumours, soft tissue, foot, mri

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