The United States has by far the largest correctional system in the world. It is so large, in fact, so sprawling and dispersed, so administratively complex that just how many people are incarcerated is uncertain. The most commonly cited statistic is that are about 2.3 million inmates on any given day.
Most often, a lump in the abdomen is caused by a hernia. An abdominal hernia occurs when there is a weak spot in the abdominal wall. This allows the internal organs to bulge through the muscles of the abdomen. A hernia may appear after you strain, or lift something heavy, or after a long period of coughing. Inguinal hernia appears as a bulge in the groin or scrotum.
Type IV hiatal hernia: In type IV hiatal hernias, other organs in addition to the stomach (colon, small intestine, spleen) also herniate into the chest (see image below). Hiatal Hernia Causes & Symptoms Causes. The exact cause of hiatal hernias is unknown. They are mostly caused by weakening of the muscles of the diaphragm around the esophagus.