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Gastrointestinal intraepithelial neoplasia (GIN or GIIN) is also known as gastrointestinal dysplasia. Gastrointestinal dysplasia refers to abnormal growth of the epithelial tissue lining the gastrointestinal tract including the esophagus, stomach, and colon. Pancreatic, biliary, and rectal Intraepithelial Neoplasia are discussed separately. The ...
Hematoxylin and eosin stains from different sections of a single diffuse intrinsic pontine glioma specimen, showing low-grade (top) and high-grade (bottom) areas. In pathology , grading is a measure of the cell appearance in tumors and other neoplasms .
Fundic gland polyposis is a medical syndrome where the fundus and the body of the stomach develop many fundic gland polyps.The condition has been described both in patients with familial adenomatous polyposis (FAP) and attenuated variants (AFAP), and in patients in whom it occurs sporadically.
Owing to the causal relationship between H. pylori infection and gastric MALT lymphoma, identification of the infection is imperative. Histological examination of GI biopsies yields a sensitivity of 95% with five biopsies, [7] but these should be from sites uninvolved by lymphoma and the identification of the organism may be compromised by areas of extensive intestinal metaplasia.
An inflammatory fibroid polyp (IFP) is an uncommon digestive system tumor. [1] J. Vanek initially identified it as a separate pathological entity in 1949 when he reported six case reports of eosinophilic infiltration in gastric submucosal granulomas. [2]
In contrast-enhanced CT images, large GISTs appear as heterogeneous masses due to areas of living tumor cells surrounding bleeding, necrosis or cysts, which is radiographically seen as a peripheral enhancement pattern with a low attenuation center. [19] In MRI studies, the degree of necrosis and bleeding affects the signal intensity pattern ...
Pathology, gastroenterology Reactive gastropathy , chemical gastropathy also called gastritis of « C type » or "chemical gastritis" [ 1 ] is an abnormality in the stomach caused by chemicals, e.g. bile , alcohol , and characteristically has minimal inflammation.
The lesions are classified as low grade (i.e. Lugano classification Grades 1 or 2) in 95-100% of cases. Immunochemical analyses indicate that the latter cells express CD20, CD10, BCL6, [2] and CD79A [6] and have a very low proliferation rate as defined by the intensity of their expression of Ki-67. [6]