Gross residual tumor after primary cytoreductive surgery is a prognostic factor for ovarian cancer and residual tumor volume after cytoreductive surgery is a prognostic factor for late stage ovarian cancers.

Residual Tumor Volume Post Cytoreduction is a Registry Data Collection Variable listed in AJCC. It was previously collected as Ovary, CS SSF # 3.

00	No gross residual tumor nodules
10	Residual tumor nodule(s) 1 centimeter (cm) or less AND neoadjuvant chemotherapy not given or unknown if given
20	Residual tumor nodule(s) 1 cm or less AND neoadjuvant chemotherapy given (before surgery)
30	Residual tumor nodule(s) greater than 1 cm AND neoadjuvant chemotherapy not given or unknown if given
40	Residual tumor nodule(s) greater than 1 cm AND neoadjuvant chemotherapy given (before surgery)
90	Macroscopic residual tumor, size not stated AND neoadjuvant chemotherapy not given or unknown if given
91	Macroscopic residual tumor nodule(s), size not stated AND neoadjuvant chemotherapy given (before surgery)
92	Procedure described as optimal debulking and size of residual tumor nodule(s) not given AND neoadjuvant chemotherapy not given or unknown if given
93	Procedure described as optimal debulking and size of residual tumor nodule(s) not given AND neoadjuvant chemotherapy given (before surgery)
97	No cytoreductive surgery performed
98	Not applicable: Information not collected for this case (If this item is required by your standard setter, use of code 98 will result in an edit error.)
99	Not documented in medical record Residual tumor status after cytoreductive surgery not assessed or unknown if assessed

Each Site-Specific Data Item (SSDI) applies only to selected primary sites, histologies, and years of diagnosis. Depending on applicability and standard-setter requirements, SSDIs may be left blank.