sigmoid colon cancer
A malignant neoplasm involving the sigmoid colon.
MONDO:0006971
sigmoid neoplasm
is_a
MONDO:0021063
malignant colon neoplasm
is_a
cancer of sigmoid colon
exact
malignant neoplasm of sigmoid colon
exact
malignant sigmoid colon neoplasm
exact
malignant tumour of sigmoid colon
exact
sigmoid colon cancer
exact