IPLab:Lab 3:Chronic Peptic Ulcer

Contents

Clinical SummaryEdit

A 56-year-old white female was admitted to the hospital with severe epigastric pain and burning. This pain, which has occurred intermittently for the Last 4 years was said to be worse at night and on an empty stomach. She had also experienced several episodes of hematemesis and melena. An upper endoscopy was performed which demonstrated an ulcer in the gastric mucosa. A breath test for Helicobacter pylori was positive so the patient was started on antibiotics and proton pump inhibitors (PPI).

Autopsy pictures and histology sections from a different patient with peptic ulcer disease are presented.

ImagesEdit

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  This is a gross photograph of a stomach containing two ulcers. Note the gastric mucosa that extends up to the edge of the ulcer (arrows).

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  This is a gross photograph of the ulcer after it has been transected. The edge of the mucosa (1) is better appreciated in this image. Note the thick, fatty tissue (2) which makes up the base of this ulcer (3).

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  This is a low-power photomicrograph of a section through the transected ulcer. The blue cells on the right hand side of this section are the normal gastric epithelial cells of the mucosa (1). Note the absence of any epithelial cells within the crater of the ulcer (2).

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  This is a photomicrograph of the margin of the ulcer. Note the intact epithelium on the right side of the section (1) and the ulcerated region without epithelium on the left (2). There are numerous inflammatory cells within this tissue.

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  This is a medium-power photomicrograph of the base of the ulcer with the fibrinopurulent membrane (1) overlying the ulcerated surface. The ulcerated surface contains granulation tissue and inflammatory cells (2).

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  This high-power photomicrograph of the ulcer base (arrows) demonstrates the lack of epithelium and the exuberant inflammatory response (1) consisting of primarily of fibrin and neutrophils (PMNs). The surface of the ulcer bed is covered with this fibrinopurulent exudate.

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  This high-power photomicrograph of the ulcer base demonstrates plump, activated fibroblasts and endothelial cells (arrows) within the granulation tissue that makes up the base of the ulcer. There are inflammatory cells (primarily lymphocytes) within this region as well.

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  This low-power photomicrograph demonstrates the healing reaction in the base of this ulcer. The base of the ulcer is at the top of the image and the serosal surface is at the bottom. Note the granulation tissue and fibrous connective tissue within the wall of the stomach (1) and the layer of inflammatory exudate on the surface of the ulcer (arrow).

Study QuestionsEdit

• What types of factors may predispose to peptic ulcer formation?

Alcoholic cirrhosis, chronic obstructive airway disease, chronic renal disease, and hyperparathyroidism or any condition which leads to hypercalcemia (calcium stimulates gastrin production).

• Why is infection with Helicobacter pylori considered to be a significant risk factor for development of peptic ulcers?

H. pylori is found in 90-100% of cases. It is thought that the H. pylori produce urease, leading to ammonia production and that they also produce a protease that breaks down glycoproteins in the mucus which forms the protective coat on the gastric mucosa.

• What cells make of the inflammatory reaction at the base of this chronic ulcer?

The base of this chronic ulcer has a granulomatous inflammatory reaction composed of lymphocytes, macrophages, fibroblasts, and endothelial cells. This is in contrast to the acute inflammatory reaction at the surface of the ulcer due to irritation from the acid and gastric contents.

Additional ResourcesEdit

ReferenceEdit

• eMedicine Medical Library: Peptic Ulcer Disease
• Merck Manual: Gastritis and Peptic Ulcer Disease

Journal ArticlesEdit

• Laine L. Upper Gastrointestinal Bleeding Due to a Peptic Ulcer. NEJM 2016 June 22; 374: 2367-2376.

ImagesEdit

• PEIR Digital Library: Peptic Ulcer Images
• WebPath: Stomach Pathology