Clinical Research Directory

Inclusion Criteria: 1. Age from 6 months to 18 years.. 2. Both sexes. 3. Diagnosed with failure to thrive, defined as : Weight-for-age below the 5th percentile for sex/age or crossing downward by ≥2 major percentiles, confirmed on two measurements. 4. Clinical suspicion of an underlying gastrointestinal cause (e.g., chronic vomiting, chronic diarrhea either bloody or not, chronic abdominal pain and/or gastrointestinal bleeding 5. Parental/guardian consent for their siblings to share in the study Exclusion Criteria: 1. Known chronic disease already causing failure to thrive (genetic, cardiac, renal, or endocrine disorders). 2. Contraindications to endoscopy or anesthesia (e.g. severe coagulopathy, unstable cardiopulmonary status). 3. Parental refusal to participate or consent for endoscopy