消しょう化か性せい潰かい瘍よう

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Meanings

1

noun

peptic ulcer

medicine

Medical term for an ulcer in the stomach or duodenum caused by digestive acids.

消extinguish, blow out, turn off

化change, take the form of, influence

性sex, gender, nature

潰crush, smash, break

瘍swelling, boil, tumor

胃い潰かい瘍よう
胃潰瘍 specifically refers to a gastric ulcer, while 消化性潰瘍 is a broader term covering both gastric and duodenal ulcers.
十じゅう二に指し腸ちょう潰かい瘍よう
十二指腸潰瘍 is a duodenal ulcer, a subtype of peptic ulcer.

Compound of 消化性 (shōkasei, 'digestive') + 潰瘍 (kaiyō, 'ulcer'). The term is a direct medical translation, likely from Western medicine.