Most mesenchymal tumors of the gastrointestinal tract are currently classified as specific gastrointestinal stromal tumors. However, true leiomyomas are more common in the esophagus, and they have ...

Interpretation of gastrointestinal tract mesenchymal lesions is simplified merely by knowing in which anatomic layer they are usually found. For example, Kaposi sarcoma is detected on mucosal biopsies ...

Learning the role of immune-system cells in healthy digestive tracts and how they interact with neighboring nerve cells may lead to new treatments for irritable bowel syndrome, researchers say. The ...

Ki67 labeling of normal colon resections. Shown are examples of Ki67 (A, B, C, D) labeling in a 26 year old individual (A-B) compared to an 80 year old individual (C-D). In each image, lu indicates ...