This variety comes next in order of frequency, and constituted twelve out of the fifty-three cases, or 22 per cent. It usually presents itself as a round or oval circumscribed tumour of the wall of the stomach in the neighbourhood of the great curvature. As it grows it tends to project more and more beneath the serous coat, and exerts such traction upon its point of origin that it not only drags the whole organ downwards, but often acquires a pedunculated appearance. These tumours sometimes attain an enormous size (12 lb., Cantwell), and may fill the greater part of the abdominal cavity. When small they are smooth and firm on section, but as their bulk increases they become knotty and irregular in shape, and their tissue often undergoes cystic degeneration. These changes are seldom accompanied by extensive adhesions, but occasionally give rise to perforation of the stomach (Ewald).