Reflux gastritis in gastroesophageal reflux disease: A histopathological study

Review of Drug-induced Injury in Mucosal Biopsies From the Tubular Gastrointestinal Tract

The use of prescription and over-the-counter medications is on the rise in the US population, especially among those aged 65 and over, with over 46% of the population taking at least 1 prescription medication. Given the frequency of medication use, and that the majority of these medications are taken orally, it has become increasingly relevant for pathologist examining endoscopically obtained gastrointestinal tract mucosal biopsies to consider and recognize patterns of mucosal injury associated with various drugs. Reports on injuries associated with certain classes of drugs can be scattered among different sources, making a comprehensive view of various injury patterns and the drugs known to cause them difficult to obtain. Herein, we provide a comprehensive overview of the drugs known to cause mucosal injuries in the tubular gastrointestinal tract organized by the organ involved and the prominent pattern of injury.

Diet and lifestyle factors and risk of subtypes of esophageal and gastric cancers: classification tree analysis

PURPOSE

Although risk factors for squamous cell carcinoma of the esophagus and adenocarcinomas of the esophagus (EA), gastric cardia (GC), and other (noncardia) gastric (OG) sites have been identified, little is known about interactions among risk factors. We sought to examine interactions of diet, other lifestyle, and medical factors with risks of subtypes of esophageal and gastric cancers.

METHODS

We used classification tree analysis to analyze data from a population-based case-control study (1095 cases, 687 controls) conducted in Connecticut, New Jersey, and western Washington State.

RESULTS

Frequency of reported gastroesophageal reflux disease symptoms was the most important risk stratification factor for EA, GC, and OG, with dietary factors (EA, OG), smoking (EA, GC), wine intake (GC, OG), age (OG), and income (OG) appearing to modify the risk of these cancer sites. For esophageal squamous cell carcinoma, smoking was the most important risk stratification factor, with gastroesophageal reflux disease, income, race, noncitrus fruit, and energy intakes further modifying risk.

CONCLUSION

Various combinations of risk factors appear to interact to affect risk of each cancer subtype. Replication of these data mining analyses are required before suggesting causal pathways; however, the classification tree results are useful in partitioning risk and mapping multilevel interactions among risk variables.

Gastritis and carditis

Dyspepsia is a common clinical problem. Its causes include peptic ulcer disease, gastroesophageal reflux, and functional (nonulcer) dyspepsia. A detailed clinical description of pain does not reliably differentiate the cause. Approximately 80% of gastroscopies are performed for the investigation of dyspepsia. "Gastritis" is diagnosed endoscopically in 59% of all stomachs, although in only 3% are the changes severe. Pathologic examination of unselected gastric biopsy specimens reveals that abnormalities are present in 62-73%, but there is only a weak correlation between endoscopic and histologic findings. For these reasons, it is recommended that endoscopic examination should always be accompanied by biopsy. Ideally, biopsies should be taken in a systematic fashion to include sampling of antrum and corpus. Recent evidence suggests that gastric infection by Helicobacter pylori initially presents as a superficial gastritis. Later it may become atrophic with development of intestinal metaplasia. The onset of atrophic changes may be related to the duration of infection, the strain of the infecting organism, associated dietary factors, or as-yet undefined host factors related to immunity. Persistent superficial gastritis predisposes to duodenal ulcer and gastric mucosa-associated lymphoid tissue lymphoma. Atrophic gastritis predisposes to gastric ulcer and adenocarcinoma. Evidence is accumulating that in some patients, pernicious anemia may be an end result of H. pylori-induced atrophic gastritis. Reactive gastropathy is a relatively common finding in gastric biopsies; in most instances it is associated with either reflux of duodenal contents or therapy with nonsteroidal anti-inflammatory drugs. Lymphocytic gastritis, eosinophilic gastritis, and the gastritis associated with Crohn's disease are distinct morphologic entities. Lymphocytic gastritis and eosinophilic gastritis have a variety of clinical associations. Carditis is a controversial topic: currently opinions are divided as to whether it is the result of gastroesophageal reflux or a proximal extension of H. pylori infection from the remainder of the stomach.

Chemical gastropathy: a distinct histopathologic entity in children

BACKGROUND

Chemical gastropathy, also known as chemical or reactive gastritis, is a well-described histopathologic entity in adults. It is characterized by presence of foveolar hyperplasia, vascular congestion, lamina propria edema, and prominent smooth muscle fibers in the absence of inflammatory cells in the gastric antral mucosa. There are no data in children on this condition.

METHODS

All children showing features of chemical gastropathy in antral biopsy specimens were identified from pathology database from 1997 to 2000. Antral biopsy specimens were reviewed to assess the diagnosis of chemical gastropathy using standard diagnostic criteria. Charts of the children diagnosed with chemical gastropathy were reviewed for clinical course, endoscopic findings, and risk factors.

RESULTS

Twenty-one children (12 male, 9 female) with chemical gastropathy were identified. Common presenting symptoms were epigastric pain and vomiting. Eleven children were taking multiple medications, including nonsteroidal anti-inflammatory drugs. Endoscopy revealed esophagitis in 12, antral erythema in 7, and thick bile in the stomach in 7 children. Antral histology revealed foveolar hyperplasia in 19, congestion in 20, lamina propria edema and smooth muscle fibers in 16, and absence of inflammation in 19 patients. Acid suppression was the treatment in all patients. Mean follow-up duration was 11 months in 17 children. Symptoms resolved completely in 11 and partially in 6 patients.

CONCLUSIONS

As in adults, chemical gastropathy occurs in children. The factors associated with chemical gastropathy in this survey were gastroesophageal reflux disease and intake of multiple medications, including nonsteroidal anti-inflammatory drugs.