Hepatobiliary scintigraphy as a diagnostic modality for gastroparesis of the bypassed stomach after gastric bypass for morbid obesity.

After Roux-en-Y gastric bypass (RYGBP), the excluded gastric remnant represents a challenge for the surgeon. Many diseases are reported to take place in that remnant, such as cancer, gastritis, and ulcer. On the other hand, diagnosing these pathological changes requires invasive intervention. We report the use of a noninvasive study to diagnose pathology in the bypassed stomach.