noun
duodenal ulcer
Medical term for an ulcer in the duodenum. Used in clinical and everyday health contexts.
十二指腸潰瘍の原因の多くはピロリ菌です。
Many duodenal ulcers are caused by H. pylori bacteria.
胃潰瘍 is a gastric (stomach) ulcer, while 十二指腸潰瘍 is specifically in the duodenum.
Compound of 十二指腸 (duodenum) and 潰瘍 (ulcer). The term is a direct medical compound with no known historical derivation beyond its components.