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Case Reports in Rheumatology
Volume 2012 (2012), Article ID 253693, 6 pages
http://dx.doi.org/10.1155/2012/253693
Case Report

Tophaceous Gout of the Patella: A Report of Two Cases

1Trauma and Orthopaedics, Glasgow Royal Infirmary, 84 Castle Street, Glasgow G4 0SF, UK
2Radiology, Glasgow Western Infirmary, Dumbarton Road, Glasgow G11 6NT, UK
3Pathology, Glasgow Western Infirmary, Dumbarton Road, Glasgow G11 6NT, UK

Received 3 October 2012; Accepted 19 October 2012

Academic Editors: R. Cevik, U. Gresser, and M. A. Hunt

Copyright © 2012 Graeme Hopper et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Introduction. Tophaceous gout of the patella is rare and may masquerade as a tumour or tumour-like condition. Cases. We report two patients with gout involving the patella, one complicated by a pathological fracture and the other occurring in a bipartite patella in a young adult. Discussion. Typical imaging appearances and measurement of serum urate will usually confirm the diagnosis but, occasionally, the serum urate level may be normal in active gout and in such cases, a biopsy will be required. Conclusion. Gout of the patella may masquerade as a tumour or tumour-like condition and it is important to consider gout in the differential diagnosis.