
Malignant neoplasm of retroperitoneum and peritoneum

Malignant neoplasm of retroperitoneum
- A primary or metastatic malignant neoplasm involving the retroperitoneum. The vast majority of cases are carcinomas, lymphomas, or sarcomas.--2004

Malignant neoplasm of specified parts of peritoneum

Malignant neoplasm of peritoneum unspecified