How to differentiate TAR with radial club hand

Radial club hand is a congenital (present at birth) hand anomaly where the radius bone in the arm is missing or underdeveloped, causing the hand to be bent towards the body (radially deviated). It is also known as radial ray deficiency or anomaly.. TAR is (Thrombocytopenia-absent radius) syndrome.
TAR- Thrombocytopenia with absent Radius. Radial club hand- radius bone malformed or completely absent without thrombocytopenia.
Agreed with De.Dinesh CS