Medical Definition of antrectomy
: surgical removal of the lower portion of the stomach ◆Antrectomy may be performed for several reasons including treatment of peptic ulcers, gastric obstruction, or malignant tumors . After antrectomy, gastrin levels returned to normal in all three patients.—Irvin M. Modlin and George Sachs, Acid Related Diseases: Biology and Treatment, 2004
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