15-Year study aims to uncover hidden death risks in intestinal TB patients

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Aged ≥18 years old (no upper age limit) at the time of intestinal tuberculosis diagnosis; 2. Diagnosed with intestinal tuberculosis in accordance with clinical diagnostic criteria (combined with clinical manifestations, laboratory examinations, imaging findings, and/or pathological results); 3. For the Retrospective Intestinal Tuberculosis Cohort: diagnosed between January 2011 and December 2025, with complete medical records and follow-up data (including mortality status); 4. For the Prospective Intestinal Tuberculosis Cohort: newly diagnosed, able to cooperate with regular follow-up, and sign the informed consent form (if applicable); 5. No severe cognitive impairment or mental illness that affects the collection of clinical data and follow-up. Exclusion Criteria: 1. Patients with incomplete diagnosis of intestinal tuberculosis (no clear clinical, laboratory, imaging or pathological evidence to confirm the diagnosis); 2. Patients with concurrent severe extrapulmonary tuberculosis (such as tuberculous meningitis, miliary tuberculosis) that may independently affect mortality outcomes; 3. For the Retrospective Intestinal Tuberculosis Cohort: patients with incomplete medical records or missing key follow-up data (especially mortality status and related risk factor information); 4. For the Prospective Intestinal Tuberculosis Cohort: patients who refuse to sign the informed consent form (if applicable), cannot cooperate with regular follow-up, or are lost to follow-up during the study period; 5. Patients with severe comorbidities that may lead to rapid death (such as advanced malignant tumors, severe heart failure, end-stage liver/kidney disease) within the study period, which may interfere with the analysis of mortality risk factors related to intestinal tuberculosis; 6. Patients with cognitive impairment, mental illness or other conditions that cannot provide effective clinical information or cooperate with the study.