C48 - Malignant neoplasm of retroperitoneum and peritoneum
C48.1 - Malignant neoplasm of specified parts of peritoneum
InclusionTerm:
-Malignant neoplasm of cul-de-sac
-Malignant neoplasm of mesentery
-Malignant neoplasm of mesocolon
-Malignant neoplasm of omentum
-Malignant neoplasm of parietal peritoneum
-Malignant neoplasm of pelvic peritoneum