Table 2.

Nature of primary tumor

Parameter	Mean	Range
Primary tumor	n	%
Colorectal tumor	44	35.2
Breast tumor	27	21.6
Pancreas tumor	17	13.6
Bronchial tumor	7	5.6
Gastric tumor	6	4.8
Renal tumor	3	2.4
Endocrine gastrointestinal tumor	2	1.6
Melanoma	2	1.6
Others	23	18.4
In 6 patients, several primary tumors were present