Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0000737 (abdominal pain)
 31,184 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Nodular lymphoid hyperplasia of the gastrointestinal tract is characterized by the presence of multiple small nodules, normally between between 2 and 10 mm in diameter, distributed along the small intestine (more often), stomach, large intestine, or rectum. The pathogenesis is largely unknown. It can occur in all age groups, but primarily in children and can affect adults with or without immunodeficiency. Some patients have an associated disease, namely, common variable immunodeficiency, selective IgA deficiency, Giardia infection, or, more rarely, human immunodeficiency virus infection, celiac disease, or Helicobacter pylori infection. Nodular lymphoid hyperplasia generally presents as an asymptomatic disease, but it may cause gastrointestinal symptoms like abdominal pain, chronic diarrhea, bleeding or intestinal obstruction. A diagnosis is made at endoscopy or contrast barium studies and should be confirmed by histology. Its histological characteristics include markedly hyperplasic, mitotically active germinal centers and well-defined lymphocyte mantles found in the lamina propria and/or in the superficial submucosa, distributed in a diffuse or focal form. Treatment is directed towards associated conditions because the disorder itself generally requires no intervention. Nodular lymphoid hyperplasia is a risk factor for both intestinal and, very rarely, extraintestinal lymphoma. Some authors recommend surveillance, however, the duration and intervals are undefined.
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PMID:Nodular lymphoid hyperplasia in the gastrointestinal tract in adult patients: A review. 2540 Aug 67

Nodular lymphoid hyperplasia (NLH) in the small intestine is a rare benign lesion, characterized by the presence of multiple small nodules on the surface of the intestine. To define the clinicopathological and colonoscopic characteristics in Chinese patients with ileal NLH, we collected 65 patients with NLH in the terminal ileum from the endoscopic database in our hospital and clinical data from medical records. Histology and immunohistochemical staining were performed in the biopsies. The results demonstrated that the main symptoms included diarrhea (70.8%), abdominal pain (60.0%), hematochezia (46.2%), anemia (40.0%), and hypoproteinemia (21.5%). Enteroscopy revealed multiple, sporadic, granular or round-shaped nodules with diameters between 2 and 5 mm in the terminal ileum. The histology revealed the nodules consisted of mass lymphoid follicles in the lamina propria and submucosa of the terminal ileum. The follicles contained mitotically active germinal centers surrounded by well-defined lymphocyte mantles and composed predominantly of CD20+ B cells. The diseases found in patients with NLH included chronic diarrhea, Crohn's disease, ischemic enterocolitis and allergic purpura. The level of hemoglobin in NLH patients who had diarrhea and hematochezia remarkably decreased as compared with those in patients with chronic diarrhea. In conclusion, ileocolonoscopic screening is an important step to find the NLH in terminal ileum patients with diarrhea, abdominal pain, hematochezia, and hypoproteinemia. Histological examination is necessary for the exclusion of malignancy and chronic inflammation.
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PMID:Clinicopathological and Ileocolonoscopic Characteristics in Patients with Nodular Lymphoid Hyperplasia in the Terminal Ileum. 2882 10