Diagnosis of Esophagogastric Tumors

It has been suggested that certain histological criteria may serve to indicate a good prognosis in patients with esophageal carcinoma. These include absence of subepithelial extension of the carcinoma cells, stage no higher than m2, and no neoplastic involvement near the resection margin. As endoscopic mucosal resection is becoming an accepted treatment option in this type of tumor, prognostic parameters of this type are of particular interest. By contrast, when metastases are detected in the celiac lymph nodes, it implies that the tumor is unresectable and that palliative treatment is required. Endoscopic ultrasound (EUS)-guided fine-needle aspiration has been found to be the most cost-effective option in this setting.
Although autofluorescence endoscopy is being tested as a new technique for endoscopic diagnosis, its value is at present unclear. However, such developments may lead to improved diagnosis in the future, particularly in relation to the initial stages of carcinoma. For the moment, EUS is still the most widely accepted method for early diagnosis and staging.
Esophageal squamous-cell carcinoma appears to be commonly associated with head and neck cancer, but the cost-effectiveness of surveillance is a matter of controversy. With regard to Barrett’s esophagus and adenocarcinoma, p53 staining in areas of low-grade dysplasia appears to be helpful for predicting progression to high-grade dysplasia. The prevalence of short-segment Barrett’s esophagus increases with age, but the length of the segment does not increase with time; the length probably depends on individual conditions, not merely on elapsed time. Helicobacter pylori infection appears to be associated with intestinal metaplasia at the esophagogastric junction. However, the most recent data appear to suggest that this scenario (usually termed “carditis”) may be different from intestinal metaplasia in the lower esophagus, related to acid reflux. A follow-up program might be able to detect Barrett’s esophagus adenocarcinoma at earlier stages, but only a minority of Barrett’s esophagus patients are likely to be detected before neoplasia has developed.
Gastric cancer appears to develop in individuals with H. pylori infection, but not in uninfected persons. In addition, those with severe gastric atrophy, corpus-predominant gastritis, and intestinal metaplasia may be at greater risk for gastric cancer. This again raises the question of H. pylori eradication in asymptomatic individuals with infection, and surveillance of patients with severe intestinal metaplasia.
The most recent data appear to support the notion that healing of MALT lymphoma depends not only on H. pylori eradication and on the stage of the tumor, but also on individual factors (possibly immunology-related).

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