Collaborative Stage

Note: According to AJCC, "The use of the term pathologic staging is reserved for patients who undergo staging laparotomy with an explicit intent to assess the presence of abdominal disease or to define histologic microscopic disease extent in the abdomen. Staging laparotomy and pathological staging have been essentially abandoned as useful procedures." (7th ed., page ) Therefore, Collaborative Staging uses a modified evaluation scheme for lymphomas, and it applies to the CS Tumor Size/Ext-Eval field only. The other Eval fields are coded as "not applicable" for this schema.

Code	Description	Staging Basis
0	Does not meet criteria for AJCC pathologic staging: No staging laparotomy done. No autopsy evidence used	c
2	Meets criteria for AJCC pathologic staging: No surgical resection done, but evidence derived from autopsy (tumor was suspected or diagnosed prior to autopsy)	p
3	Meets criteria for AJCC pathologic staging: Staging laparotomy done	p
8	Meets criteria for autopsy (a) staging: Evidence from autopsy only (tumor was unsuspected or undiagnosed prior to autopsy).	a
9	Unknown if staging laparotomy done Not assessed; cannot be assessed Unknown if assessed Not documented in patient record	c

CS Tumor Size/Ext Eval