<prompt> Causes of unilateral clubbing include all of the following, ExceptCongenital cyanotic hea diseasePanicoast tumorAoic AncurymBrachial AV fistulas  <response>: Answer is A Congenital Cyanotic Hea Disease : Congenital cyanotic hea disease is a cause for bilateral clubbing Causes of Unilateral Clubbing Aneurysm of Aoa, innonimate aery, suhclan aery or axillary aery Brachial AV fistulas malformations Infected aerial grafts Pancoast tumors Unilateral Elythromelalgia 