TY - JOUR T1 - Monoarthritis and Microhematomas in a 4-year-old Boy JF - The Journal of Rheumatology JO - J Rheumatol SP - 1068 LP - 1069 DO - 10.3899/jrheum.210181 VL - 49 IS - 9 AU - Chelsea DeCoste AU - Shirley M.L. Tse Y1 - 2022/09/01 UR - http://www.jrheum.org/content/49/9/1068.abstract N2 - Monoarthritis warrants a broad differential diagnosis including trauma, infection, malignancy, and hemarthrosis.1 Most children with hemophilia are diagnosed before age 2 years, with hemarthrosis typically occurring 1–2 years after bleeding into the soft tissues, skin, and mucosa.2A 4-year-old Egyptian boy presented with 2 years of right ankle pain and swelling lasting 3–5 days, as well as hard, tender skin lesions on his … ER -