"The entire radius bone and often the thumb is absent on X-ray."
Expected headings
"X-ray"
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"No known genetic cause has been identified yet. Possible causation is suspected in fibroblast growth factor function and sonic hedgehog gene. Associated with thrombocytopenia-absent radius (TAR) syndrome, Fanconi anaemia, VATER and VACTERL syndrome."
"Initial treatment is passive stretching, splinting and manipulation and should commence soon after birth."