Primary gastrointestinal lymphomas: A radiological-pathological review. Part 1: Stomach, oesophagus and colon
| Autor: | Richard M Mendelson, S Fermoyle |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Endoscopic ultrasound
Pathology medicine.medical_specialty Esophageal Neoplasms Lymphoma Contrast Media Endosonography Stomach Neoplasms immune system diseases hemic and lymphatic diseases medicine Humans Radiology Nuclear Medicine and imaging Pathological medicine.diagnostic_test business.industry Stomach Gastric lymphoma Histology Lymphoma B-Cell Marginal Zone medicine.disease digestive system diseases Endoscopy medicine.anatomical_structure Lymphatic system Colonic Neoplasms Barium Sulfate Tomography X-Ray Computed business |
| Zdroj: | Australasian Radiology. 49:353-364 |
| ISSN: | 1440-1673 0004-8461 |
| DOI: | 10.1111/j.1440-1673.2005.01457.x |
| Popis: | Primary gastrointestinal lymphomas are most common in the stomach, followed by small intestine and then colon. The most frequently used pathology classification of lymphomas is the Revised European and American Lymphoma /World Health Organization classification. The correlation of radiological morphology with histology is relatively poor, although characteristic subtypes will be discussed. In the stomach, the majority of primary lymphomas are of B-cell origin of mucosa-associated lymphoid tissue (MALT) type. Low-grade MALT lymphomas are associated with Helicobacter pylori infection and often respond to eradication of this organism. Radiological features include thickened folds, nodularity, depressed lesions, ulcers, prominent areae gastricae. High-grade (large B-cell) tumour patterns include infiltrative, polypoid, nodular, ulcerated or a combination. Endoscopy, endoscopic ultrasound and CT are important in diagnosis and staging, although appearances on barium studies should be recognized. Primary colonic lymphomas are rare. Most are of B-cell origin. Focal and diffuse forms are seen, the former producing polypoid or nodular or cavitating masses and the latter producing ulcerative or nodular (polyposis) patterns on imaging. Even when circumferential, lymphoma rarely causes obstruction. Small bowel lymphomas will be discussed in the forthcoming part 2 of this review. |
| Databáze: | OpenAIRE |
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