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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.
Primary gastric lymphoma (lymphoma that originates in the stomach itself) [1] is an uncommon condition, accounting for less than 15% of gastric malignancies and about 2% of all lymphomas. However, the stomach is a very common extranodal site for lymphomas (lymphomas originate elsewhere and metastasise to the stomach). [2]
Poorly cohesive gastric carcioma (signet-ring cell type) x400, H&E stain . Poorly cohesive gastric carcinoma (dyscohesive carcinoma, carcinoma with a lack of intercellular connections) is a malignant tumour of epithelial origin, characterized by diffuse distribution of tumour cells, isolated from each other or in small groups.
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.
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 ...
Hip dysplasia is an abnormality of the hip joint where the socket portion does not fully cover the ball portion, resulting in an increased risk for joint dislocation. [4] Hip dysplasia may occur at birth or develop in early life. [4] Regardless, it does not typically produce symptoms in babies less than a year old. [5]