In addition to the swelling formed by an enlarged and dislocated stomach, the morbid growth itself often gives rise to a tumour which is visible to the naked eye. This is especially the case when the pylorus is the seat of the disease, but a large neoplasm of the inferior curvature, of the anterior wall, or of the omentum may be also easily detected. On the other hand, growths which affect the lesser curvature are seldom visible except on deep inspiration or after the stomach has been artificially distended, while those that occupy the cardia are effectually hidden beneath the sternum and ribs.