The strengths and limitations of routine staging before treatment with abdominal CT in colorectal cancer

BMC Cancer

Table 1 Characteristics all patients with CRC 2007-2009

	All patients (n = 612)
Age
Mean	70 yr
Median	70 yr
Range	33-98 yr
Gender
Male	349	57%
Female	263	43%
Localization primary tumor
Colon	474	77%
Rectum	138	23%
Staging procedure
Abdominal CT preceding treatment	513	84%
Abdominal CT < 3 months after surgery	44	7%
AJCC stage based on pTNM (2002) ^a
Stage 0	12	2%
Stage I	75	12%
Stage II	171	28%
Stage III	143	23%
Stage IV	188	31%
Not classified^d	23	4%
Localizations of distant metastases in cohort ^b
Liver	101	17%
Peritoneal	27	4%
Liver and lung	24	4%
Liver and peritoneal	11	2%
Lung	7	1%
Peritoneal and lung	4	1%
More than 2 organs and/or other localisations^c	14	2%
Localization of distant metastases per organ ^{b, c}
Liver	144	24%
Peritoneal	49	8%
Lung	42	7%

^a This includes patients with pathological downstaging after neoadjuvant chemoradiation (n = 69); a complete remission of histologically proven colorectal cancer was staged as stage 0.
^b Staging of the lung in this cohort was done with chest CT (n = 415) or chest X-ray (n = 197).
^c Other localisations were brain and skeletal metastases.
^d Of 23 patients, 20 patients had no surgery and 3 patients had no resection resulting in an unknown TN status. Of 23 patients, 11 patients had an unknown M status and 12 patients had M0 status.

ISSN: 1471-2407