Although small stomach hernias may have no symptoms, larger ones can cause heartburn, problems swallowing, bloody stooland pain that is felt either in the abdomen or chest, relates the Mayo Clinic. These symptoms may signal a possible hernia.A stomach hernia is referred to as a hiatal hernia because it develops when a portion of the stomach pushes upward through the hiatus into the diaphragm, explains WebMD.
The hiatus is a small aperture found in the diaphragm. Two kinds of hiatal hernia that can develop are paraesophagealand sliding hiatal hernias. However, sliding hiatal hernias are the most common in people. This type occurs whenpart of the stomach and the junction between the esophagus and stomach protrude into the chest area. Paraesophageal hiatal hernias can developwhen the junction between the esophagus and stomach stays in place but a portion ofstomach bulges into the chest. This is the more serious type because it can lead to a strangulated hernia that can cut off the blood supply to the stomach, states WebMD. People can have a paraesophageal hiatal hernia and not experience any symptoms.