This specialty focuses on diagnosing diseases of the digestive tract, which includes the esophagus, stomach, intestines, liver, pancreas, and gallbladder. By examining biopsy samples from endoscopic procedures and surgical specimens, pathologists diagnose diseases such as inflammatory bowel disease (IBD), celiac disease, liver cirrhosis, pancreatitis, and cancers such as colorectal cancer and pancreatic cancer. Accurate diagnosis in this field is crucial to guide treatment plans, especially in cases of cancer.