Radial drainage patterns develop surrounding areas of high topography where elevation drops from a central high area to surrounding low areas. Rectangular drainage patterns develop where linear zones of weakness, such as joints or faults cause the streams to cut down along the weak areas in the rock.
Surgery to remove some or most of the esophagus is called an esophagectomy. Often a small part of the stomach is removed as well. The upper part of the esophagus is then connected to the remaining part of the stomach.Part of the stomach is pulled up into the chest or neck to become the new esophagus.pen esophagectomy: Many different approaches can be used to remove part of the esophagus. 1  For a transthoracic esophagectomy, the esophagus is removed with the main incisions in the abdomen and the chest. 2  If the main incisions are in the abdomen and neck, it is called a transhiatal esophagectomy.
A paraesophageal hernia and intrathoracic stomach is a severe type of hiatal hernia in which the fundus, or upper portion of the stomach, may slide upward into the chest cavity through the hiatus. The condition occurs as an intensifying of a sliding hiatal hernia.