noun
colon cancer
Medical term for malignant tumor in the colon.
父は結腸癌と診断された。
My father was diagnosed with colon cancer.
大腸癌 is a broader term for colorectal cancer, including both colon and rectal cancer, while 結腸癌 specifically refers to cancer of the colon.
Compound of 結腸 (colon) and 癌 (cancer).