<prompt> Rib notching is found in a Neurofibromatosisb Lymphangiomyomatosisc Aortic aneurysmd Taussig-Bing operatione Aortic obstructionacdadeabdad  <response>: Neurofibromatosis and aortic obstruction thrombosis may cause rib notching.Taussig - bing malformation, when associated with coarctation of aorta, can cause rib notching. 