gastric antrum
Pronunciation: GAS-trik AN-trum
Lower portion of the stomach between the body and pylorus, frequently involved in peptic ulcer disease and gastric malignancy.
Full Definition
The gastric antrum is the distal portion of the stomach located between the gastric body proximally and the pyloric canal distally. This region is characterized by its thick muscular wall and is the primary site of gastrin production from G-cells in the antral mucosa. The antrum is frequently involved in peptic ulcer disease and gastric adenocarcinoma, making it a common target for surgical resection. Antrectomy, or surgical removal of the antrum, is often performed as part of distal gastrectomy procedures for both benign and malignant conditions.
Usage
Usage note: Distinguish from other gastric anatomical regions in documentation.
In Context
- "The gastric antrum showed evidence of chronic inflammation consistent with H. pylori gastritis." — endoscopy report
- "Distal gastrectomy included resection of the entire gastric antrum with negative margins." — operative report