Transverse colon displacement is a manifestation of pancreatic cysts. Pseudocysts in the head of the pancreas can widen the duodenal flexure and displace the transverse colon upward or downward. Pancreaticcysts include true cysts, pseudocysts and cystic tumors. In addition to the exclusion of gastrointestinal cavity lesions, compression and displacement of the cyst on the surrounding organs can also be seen. If a large pseudocyst is present behind the stomach, barium can show that the stomach is pushed forward and the lesser curvature of the stomach can be compressed. So, what tests should be done for transverse colon displacement? The following are the examination methods for transverse colon displacement: 1. Blood and urine amylase measurement The pancreatic enzyme in the cyst can appear in blood and urine after absorption by the cyst wall, causing a mild to moderate increase of amylase in serum and urine. However, it has been reported that amylase may not be elevated in about 50% of cases. Generally, in acute pancreatitis caused by pseudocysts, serum amylase is often consistently elevated, while in chronic pancreatitis caused by amylase is often normal. Ultrasound is a simple and effective means of diagnosing pancreatic pseudocysts, typically in the epigastrium can be detected in a clear location, the scope of a definite liquid dark area. ultrasound is particularly helpful in identifying masses and cysts, the correct rate of diagnosis of pancreatic pseudocysts can be 73% to 91%. Dynamic ultrasound exploration can be used to understand the change in cyst size. In addition, under the guidance of ultrasound, cyst puncture can be performed and cyst fluid can be extracted for biochemical and cytological examination. 3.CT examination On CT scan, pancreatic pseudocysts are round or oval areas with smooth edges and uniformly reduced density. If CT examination shows a gas-fluid plane, it indicates the formation of infectious abscess. 4.X-ray examination Barium meal X-ray examination also has localization value for pancreatic pseudocysts, which can exclude lesions in the gastrointestinal cavity and can also see signs of compression and displacement of the cyst on the surrounding organs. If a large pseudocyst is present behind the stomach, barium can show that the stomach is pushed forward and the lesser curvature of the stomach can be compressed. Pseudocysts in the head of the pancreas may widen the duodenal flexure and displace the transverse colon upward or downward. Occasionally, abdominal plain radiographs may reveal calcified shadows of the pancreas.