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clinical evaluation of the antiprothrombin assay and the antiphosphatidylserine ⁄ prothrombin assay, and comparison with other antiphospholipid antibody assays. Mod Rheumatol 2006; 16:158-64. 5 Cervera R, Piette JC, Font J et al. Antiphospholipid syndrome: clinical and immunologic manifestations and patterns of disease expression in a cohort of 1,000 patients. Arthritis Rheum 2002; 46:1019-27. 6 Uthman IW, Khamashta MA. Livedo racemosa: a striking dermatological sign for the antiphospholipid syndrome. J Rheumatol 2006; 33:2379-82. 7 Emmerich J, Rosendaal FR, Cattaneo M et al. Combined effect of factor V Leiden and prothrombin 20210A on the risk of venous thromboembolism -pooled analysis of 8 case-control studies including 2310 cases and 3204 controls. Study Group for Pooled-Analysis in Venous Thromboembolism. Thromb Haemost 2001; 86:809-16. 8 Slovut DP, Olin JW. Fibromuscular dysplasia. N Engl J Med 2004; 350:1862-71. 9 Miller DJ, Maisch SA, Perez MD et al. Fatal myocardial infarction in an 8-year-old girl with systemic lupus erythematosus, Raynaud's phenomenon, and secondary antiphospholipid antibody syndrome.

The authors report the case of a four-year-old boy who, having been diagnosed as having uncomplicated Henoch-Schonlein purpura, returned five days later with a new crop of lesions and sudden onset of engorgement and oedema of the penis. Testicular and scrotal involvement has been well documented in Henoch-Schonlein purpura but involvement of the penis alone has not been widely reported.

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