Collaborative Stage

Collaborative Stage for TNM 7 - Revised 01/27/2010 [ Schema ]

NETColon

CS Site-Specific Factor 11
Mitotic Count

Note: Record mitotic count as documented in the pathology report. For colon primaries, this count is usually documented as mitoses per 10 high power fields (40X field). For other sites in which mitotic count is collected, this denominator may vary.

Code	Description
000	0 mitoses per 10 high-power fields (40x field) 0 mitoses per 2 square millimeters Mitoses absent No mitoses present
001	.1 mitoses per 10 high-power fields (40x field) .1 mitoses per 2 square millimeters
002	.2 mitoses per 10 high-power fields (40x field) .2 mitoses per 2 square millimeters
003	.3 mitoses per 10 high-power fields (40x field) .3 mitoses per 2 square millimeters
004	.4 mitoses per 10 high-power fields (40x field) .4 mitoses per 2 square millimeters
005	.5 mitoses per 10 high-power fields (40x field) .5 mitoses per 2 square millimeters
006	.6 mitoses per 10 high-power fields (40x field) .6 mitoses per 2 square millimeters
007	.7 mitoses per 10 high-power fields (40x field) .7 mitoses per 2 square millimeters
008	.8 mitoses per 10 high-power fields (40x field) .8 mitoses per 2 square millimeters
009	.9 mitoses per 10 high-power fields (40x field) .9 mitoses per 2 square millimeters Stated as less than 1 mitoses per 10 high-power fields (40x field) Stated as less than 1 mitoses per 2 square millimeters
010-500	1-50 mitoses per 10 high-power fields (40x field) 1-50 mitoses per 2 square millimeters
510	51 or more mitoses per 10 high-power fields (40x field) 51 or more mitoses per 2 square millimeters
988	Not applicable: Information not collected for this case
990	Specific number not stated, described less than 2 mitoses per 10 high-power fields (40x field) Specific number not stated, described less than 2 mitoses per square millimeter
995	Specific number not stated, described as between 2-20 mitoses per 10 high-power fields (40x field) Specific number not stated, described as between 2-20 mitoses per square millimeter
997	Specific number not stated, described as more than 20 mitoses per 10 high-power fields (40x field) Specific number not stated, described as more than 20 mitoses per square millimeter
999	Unknown Not stated Not documented in patient record