- Anatomical structures being affected in this patient case include the gastrointestinal (GI) tract, stomach, and possibly the small intestine. The stomach pain, burning sensation, nausea, loss of appetite, frequent burping, bloating, and unintentional weight loss all suggest issues with the GI tract, particularly the stomach. The biopsy taken during endoscopy is likely from the stomach lining.
- The possible diagnosis based on the symptoms and diagnostic tests is a bacterial infection caused by Helicobacter pylori (H. pylori). H. pylori is a type of bacteria that can infect the stomach lining and cause inflammation, ulcers, and other digestive problems. The presence of antibodies for a pathogen and pathogen antigens in the stool indicate the presence of an infection. The biopsy may also reveal signs of inflammation or other changes in the stomach lining consistent with an H. pylori infection.
To fix this, the patient will likely be prescribed antibiotics to treat the H. pylori infection. Proton pump inhibitors or other medications that reduce stomach acid may also be prescribed to help alleviate symptoms and promote healing of any ulcers or inflammation. Dietary changes such as avoiding spicy or acidic foods and eating smaller, more frequent meals may also be recommended to reduce stomach irritation. It may take several weeks or months for symptoms to fully resolve and for the infection to be eradicated. Follow-up testing may be necessary to confirm that the infection has been successfully treated.