<prompt> Most impoant prognostic factor for colorectal carcinoma isSite of lesionTumour size characteristicsAge of patientLymph node status  <response>: .Secondaries are said to be precocious, wherein liver secondary is first identified, later the primary site is detected carcinoid tumourcolorectal carcinoma. When primary and liver secondaries are identified at the same time it is called as synchronous secondaries carcinoma stomach. ref:SRB;S manual of surgery,ed 3,pg no 545 