Left abdominal flexure splenic rupture is a clinical manifestation of traumatic splenic rupture is very harmful, requiring patients to diagnose the results in a timely manner, such as diagnostic errors may cause irreparable damage, then we need to know what tests should be done to confirm the diagnosis of left abdominal flexure, the following is an introduction to the items of left abdominal flexure examination. 1, abdominal X-ray examination Trauma patients can take abdominal X-ray to observe the spleen outline, morphology, size and location changes. The images of accompanying rib fractures are helpful in diagnosing splenic trauma. 2.Abdominal ultrasonography When the spleen is injured, it can show an uneven spleen contour, interrupted image, suspected subperitoneal hematoma, and progressive enlargement of the spleen and double contour image, and it can also show more than 100ml of fluid in the abdominal cavity. When the splenic envelope is broken, the splenic surface is not smooth and neat, the continuity is interrupted, and a dark band of cords can be detected, while the echogenicity of the splenic parenchyma is still uniform. When the pericardium and splenic parenchyma are broken at the same time, the splenic pericardium can be broken, and one or more irregular hypoechoic areas can be detected in the splenic parenchyma, and a large number of liquid dark areas can be detected in the peri-spleen, prehepatic, between the liver and kidney, and the left and right iliac fossa. 3.CT examination of the abdomen can determine the existence of splenic injury and the extent of the injury, and has a very high sensitivity and specificity. Subperitoneal hematoma of the spleen appears as a limited subperitoneal hematoma, which is crescentic or semilunar in shape. It is accompanied by flattening or serration of the corresponding parenchyma by pressure. Initially, the density of the hematoma approximates that of the spleen, but over 10 days the CT value of the hematoma gradually decreases and becomes lower than that of the splenic parenchyma. Enhanced CT shows enhancement of the splenic parenchyma while the hematoma remains unchanged, creating a significant density difference, which is an important complementary test for hematomas that are equidense on plain CT. Hematomas within the splenic parenchyma often appear as round or ovoid areas of isointensity or hypointensity. A single splenic tear is seen as a linear hypodense area within the enhanced splenic parenchyma, and multiple splenic tears often show a comminuted spleen with multiple hypodense areas, usually invading the splenic envelope, as well as a non-enhanced portion of the spleen with pneumoperitoneum, suggesting injury or embolization of the artery supplying the splenic segment. 4.Radionuclide imaging MRI is generally not used for the examination of emergency patients because of the long imaging time and the difficulty of access to MRI machines by certain resuscitation equipment, etc. However, MRI is a more effective examination method after stabilization or when the condition is complicated, especially when examining bleeding and hematoma. The various pathological changes after splenic trauma are reflected in MRI images basically the same as CT performance, while MRI can image in coronal and sagittal planes, which is more comprehensive than CT for showing overall changes and other organ injuries related to abdominal trauma. At the early stage of intrapleural hemorrhage and hematoma formation, the hemorrhagic area shows iso signal on T1-weighted and low signal on T2-weighted images. The above is the general examination that needs to be done for left abdominal flexure given by the expert, patients should follow the doctor’s instruction to do a comprehensive examination to avoid misdiagnosis and misdiagnosis, which will cause more harm and loss to the patient, I wish the patient a speedy recovery and get rid of the disease.