while true masses such as subphrenic abscess , pancreatitis and pancreatic pseudocyst are essentially unchanging in appearance or location when scanned in varying patient positions , pseudomasses of stomach or bowel loops often do change , awareness of possible post-splenectomy pseudomass is important in order to avoid confusing the gastrointestinal tract with a pathological condition .
C0030305
pancreatitis
C0017178
gastrointestinal tract