CA 19-9 in pancreatic cancer screening
What is the role of cancer antigen (CA) 19-9 in screening for pancreatic cancer?
What is the role of cancer antigen (CA) 19-9 in screening for pancreatic cancer?
Is the population of patients with cancer of unknown primary heterogeneous? What malignancies dominate in this group?
What is the best diagnostic approach to patients presenting with distant metastases and no known primary tumor? Is the stepwise approach recommended?
Is the prognosis in cancer of unknown primary worse compared with cancer with a known primary site?