CS stent area at the sidebranch carina increased significantly from 3.8 1.2 mm ( 2 ) postintervention to 4.6 1.2 mm ( 2 ) at follow-up ( P < 0.001 ) , resulting in no change in lumen area ( 3.8 1.2 mm ( 2 ) to 3.7 1.2 mm ( 2 ) , P = 0.72 ) despite a neointimal area at follow-up of 0.9 0.8 mm ( 2 ) .