<prompt> Unilateral elevation of diaphragm is commonly due to a Obesityb Large liverc Scoliosisd Congenital causesacbcad  <response>: Scoliosis can cause unilateral elevation of hemidiaphragm.Obesity and hepatomegaly cause bilateral elevation of hemidiaphragm.Option b requires specific mention here :-Hepatomegaly large liver causes bilateral elevation of hemidiaphragm because normal liver is under both the dome of diaphragms. Therefore, enlargment of whole liver hepatomegaly causes bilateral elevation of hemidiaphragm. However, involvement of a part of liver e.g. liver abscess causes unilateral elevation of hemidiaphragm. 