胃潰瘍

1. Origins, structure, and basic meaning

• Structure: 胃潰瘍, read いかいよう, is the medical term for an ulcerative lesion in the stomach lining.
• Basic usage: It appears as a diagnosis based on test results and in instructions about medication during treatment.

2. Common pitfalls and similar expressions

• An ulcer of the stomach
  • This is the name of a stomach ulcer diagnosed from test results and treated with medication. It is not synonymous with any temporary stomachache.