Thrombocytopenia--radial aplasia (TAR) syndrome with associated immune thrombocytopenia.

We report a 10 year old girl with congenital thrombocytopenia with absent radii (TAR) syndrome. Unusually this patient has shown no abnormal bleeding tendency despite numerous orthopaedic procedures. There is evidence of an associated immune component to the thrombocytopenia which has not been previously documented.