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Corel Medical Series: Cancer
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00034_Field_SRC.c07.C.6.txt
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1997-01-28
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• Tests for serum tumor markers that may be elevated with specific cancers, such as CEA (colon), CA-125
(ovary), CA 15-3 (breast), CA 19-9 (pancreas), prostate-specific antigen (prostate), alpha-fetoprotein
(hepatoma, germ cell tumors), ßHCG (choriocarcinoma, germ cell tumors) and thyroglobulin and calcitonin
(thyroid gland).
Imaging
• Chest x-ray may reveal the most common tumor origin, carcinoma of the lung. It is often impossible, however,
to distinguish between a primary lung cancer and a metastatic lesion within the chest. Sometimes chest CT is
also helpful.
• Mammograms for all women diagnosed with CUPS. Fifty percent of females with isolated metastases in the
lymph nodes in the armpit will have a breast cancer primary. This will not always be seen on a mammogram,
however (a false negative result).
• It is not helpful to do extensive x-rays— bowel x-rays, for example—to look for a primary site unless there is a
specific complaint in that area, such as constipation or gastrointestinal bleeding.
The following imaging study is frequently done:
• Abdominal CT scan , especially if there are metastases in the liver. The scan may reveal the presence of the
second most common malignancy causing CUPS, pancreatic cancer.