pouch dilation
Enlargement of the gastric pouch beyond its intended size, potentially compromising restriction and weight loss outcomes.
Full Definition
Pouch dilation refers to the pathological enlargement of the gastric pouch created during restrictive bariatric procedures, most commonly affecting Roux-en-Y gastric bypass patients. Normal pouch volume ranges from 15-30mL, but dilation can result in volumes exceeding 100mL. Causes include overeating, poor dietary compliance, mechanical factors, and natural tissue stretch over time. Symptoms include increased food tolerance, loss of satiety, and potential weight regain. Diagnosis is confirmed through upper GI series or CT imaging. Treatment options range from dietary counseling and behavioral modification to surgical revision depending on severity and associated symptoms.
Usage
Usage note: Quantify pouch size in mL when available from imaging studies.
In Context
- "Serial imaging studies demonstrated progressive pouch dilation from 20mL to 85mL over three years post-operatively." — radiology comparison report
- "The patient's 30-pound weight regain was attributed to significant pouch dilation requiring revisional surgery consideration." — bariatric clinic note