Background: The usefulness of tumor markers in NSCLC is not well defined. High levels of CEA are considered a negative prognostic factor in early-stages NSCLC but its role in advanced disease is yet ...
Three major oncology organizations recommend that CEA be measured in patients with nonmetastatic colorectal cancer prior to surgical resection. In the current analysis, patients with a normal ...
Epidemiology of rectal and small intestinal carcinoids: Two distinct tumors? Background: Serum carcinoembryonic antigen (CEA) level can be used as a sensitive marker of recurrence in the follow up of ...
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