Gastrointestinal tumors are the most common malignant tumors of the gastrointestinal tract, mainly including gastric, colon, and rectal cancers, which vary in imaging depending on the location and size of the tumor.
Gastric cancer is one of the common malignant tumors of the digestive system and has a clear classification in imaging. The augmented type of gastric cancer mainly appears as a cauliflower-shaped mass protruding into the gastric cavity; the ulcer-limited type of gastric cancer can appear as a local ulcer with irregular nodular growths at the edge; the diffuse infiltrative type of gastric cancer appears as a diffuse and extensive lesion with a rough and stiff gastric mucosa due to the infiltration of the cancer within the gastric wall. changes.
The first choice for colorectal cancer is still colorectal microscopy, MRI imaging, which more clearly shows the multilayered tissue structure of the intestinal wall, and intraluminal MRI has a greater advantage in determining either the depth of tumor infiltration or lymph node metastasis. In contrast to CT, which is primarily a structural, morphological, and anatomical technique, MRI is a multifunctional technique that displays functional data in addition to structural and anatomical information.