What are the common diseases of the gastric cardia?

Common diseases of the gastric cardia include: 1. Carditis: Caused by abnormal gastrointestinal motility, Helicobacter pylori infection, etc., presenting symptoms such as upper abdominal fullness, pain, acid reflux, and loss of appetite. 2. Cardiac ulcer: Mainly caused by Helicobacter pylori infection, with symptoms including stomach pain, heartburn, and abdominal distension. 3. Cardiac polyps: Possibly related to poor dietary habits, genetic factors, etc. Small polyps may be asymptomatic, while larger ones may cause a sensation of food sticking in the throat and pain. 4. Cardiac stricture: Often associated with autoimmune abnormalities and muscle dysfunction, symptoms include food regurgitation and difficulty swallowing. 5. Achalasia of the cardia: May be related to neurological, genetic, psychological, and other factors. The main symptoms are intermittent difficulty swallowing, a heavy or obstructed feeling behind the breastbone.