| Abbreviations | Meaning |
 | LGI | (see GI) Lower Gastro-intestinal Tract |
 | GII | Gastrointestinal Infection |
 | IPSID | Immunoproliferative Small Intestinal Disease |
 | GA | Gastric Analysis |
 | TEF | Thoraco-epigastric Flap |
 | MMIHS | Megacystis-microcolon-intestinal Hypoperistalsis Syndrome |
 | IEA | Inferior Epigastric Artery |
 | PEG | Patient Evaluation Grid; Percutaneous Endoscopic Gastrostomy; Pneumoencephalogram, Pneumoencephalography; Polyethylene Glycol |
 | GADH | Gastric Alcohol Dehydrogenase |
 | RBPI | Intestinal Retinol-binding Protein |
 | GEPG | Gastroesophageal Pressure Gradient |
 | LGI | Large Glucagon Immunoreactivity; Low Gastrointestinal; Lower Gastrointestinal |
 | PGC | Pregastricin; Primordial Germ Cell |
 | GBP | Gabapentin; Galactose-binding Protein; Gastric Bypass; Gated Blood Pool |
 | LB | Large Bowel |