Gastric sarcoidosis presenting with haematemesis

Pathology of non-Helicobacter pylori gastritis: extending the histopathologic horizons

The development of modern endoscopic techniques, easier and greater access to healthcare, and interest in Helicobacter pylori infection and its implications have all led to a significant increase in upper endoscopies. In turn, gastroenterologists and pathologists have been recognizing an ever-increasing number of patterns of mucosal injury. Consequently, there is now an interest in a wider aspect of non-neoplastic gastric pathology, namely, non-HP (H. pylori) gastritis. In this review, we present major clinico-pathological entities, based on either the salient morphological features or the underlying etiologies.

Pathology of non-infective gastritis

The discovery of Helicobacter pylori and its intimate role in the development of the most common form of chronic gastritis has elicited a much-needed interest in non-neoplastic gastric pathology. This has been paralleled by an increase in upper endoscopic examinations, which allow recognition of novel patterns and distribution of mucosal injury. Numerous attempts at classification have been made, most based on the acuteness or chronicity of gastric mucosal injury. In this review, we will not offer a new classification but present a detailed description of the major clinicopathological entities, based either on the salient morphological features or the underlying aetiologies, i.e. iatrogenic, autoimmune, vascular or idiopathic.

[Granulomatous gastritis of the antrum in generalized sarcoidosis]

A 42-year-old man had a 4 year history of sarcoidosis stage II (lung). In biopsied specimens of the antrum we found epithelioid granulomas caused by gastric involvement in sarcoidosis. Coincidentally we found a gastric ulcer which was later the source of gastric bleeding. The granulomas were located around this ulcer and also under intact mucosa. Therefore, in our opinion it was not the case that granulomatous gastritis caused the ulceration in a direct way. We saw a connection between hypercalcemia--often found in patients with sarcoidosis, as in our patient--and the gastric ulcer. Therapy was thus aimed at lowering the blood calcium concentration. Steroids were avoided at this time. The ulceration healed, although granulomatous gastritis continued.

Symptomatic sarcoidosis of the stomach

A patient is presented here who had gastric sarcoidosis which was initially diagnosed as Menetrier's disease. The English medical literature comprises 19 cases with symptomatic gastric sarcoidosis, and these are reviewed. The clinical, roentgenographic, and endoscopic findings in gastric sarcoidosis are quite variable, but of the symptomatic patients, 75% present with pain and 25% with bleeding; surgery is required in 50% of patients, while of those treated with corticosteroids, 66% improve symptomatically. Endoscopic biopsies are accurate and essential in establishing the diagnosis.

Gastric sarcoidosis

Two cases of gastric sarcoidosis are reported. Both patients presented with a history suggestive of peptic ulceration and the diagnosis of sarcoidosis was made after operation.