Diagnostics and After Treatment Follow-Up
Several tests are used in the diagnosis
of cancer and for monitoring a patient following treatment for appendiceal
cancer and peritoneal carcinomatosis. These include:
Biopsy: a biopsy is a test in which tissue
from a tumor is removed and visualized under a microscope. A biopsy
determines whether a tumor is benign (not cancer) or malignant (cancer).
Cancerous tumors are graded from 1 to 4. Low grade tumors are
considered less invasive and to grow more slowly, so have a better prognosis.
High grade tumors are considered to be faster growing and more invasive, so
have a poorer prognosis
Grade 1 tumors are
well-differentiated (resemble normal tissue more closely). These are
considered low grade cancers
Grade 2 tumors are moderately
differentiated and are considered intermediate grade tumors
Grade 3 tumors are poorly
differentiated and are considered high grade tumors
Grade 4 undifferentiated tumors,
considered high grade tumors
Tumor Markers: are substances
found in the blood or body fluids that can be created by a cancerous tumor
or created by the body in response to a cancerous tumor. Tumor markers
can be used to help diagnose cancer and to help monitor the effects of
treatments on cancer. Tumor marker tests are never used by themselves
to diagnose cancer as sometimes other diseases or conditions other than
cancer can cause a
tumor markers to be elevated, and other times tumor
markers may be absent in the presence of cancer.
Tumor marker are useful, though, in helping to monitor cancer treatment.
For instance if a cancer diagnosis has been confirmed by biopsy and cancer tumor
markers in the blood are also elevated, a lowering of cancer markers may
indicate successful treatment with surgery or a successful response to chemotherapy.
In that case, a later rise in tumor marker values after successful treatment may
indicate possible recurrence of the cancer. Tumor marker tests that
may be used include:
Normal value < 2.5ng/ml, smoker <5.0ng/ml
can be elevated with other non-cancerous diseases such as cirrhosis,
inflammatory bowel disease, chronic lung disease, and pancreatitis.
Can be positive also in the absence of any disease in a small percentage of
< 35 kU /ml
can be elevated in ovarian, endometrial, pancreatic, lung, breast, and colon
cancers. May also be positive in menstruation, pregnancy,
endometriosis, and other conditions.
CA19-9 normal value
can be elevated in gastrointestinal adenocarcinoma, gastric cancer, colon cancer,
and pancreatic cancer
several types of scans that may be used to help visualize cancerous tumors in
the body. Scans that may be used in the diagnosis of cancer include:
tomography scan (CT scan): see
the National Cancer Institute's
Computed Tomography (CT): Questions and Answers
Positron emission tomography scan (PET
Scan): A test in which a small amount of radioactive glucose (sugar) is
injected into a vein. A computerized scanner then locates areas in the
body where the glucose is being used. Since cancer cells use more
glucose than normal cells, this test can be used to help locate cancerous
tumors in the body. A limitation of PET scans is that other conditions
may also cause an increased uptake of glucose (infection, inflammation,
trauma, TB) so false positives are common. It is difficult to confirm
a cancer diagnosis based on the results of this test alone.
a nuclear medicine scan used to detect
carcinoid (neuro-endocrine) tumors
Second-look Laparoscopic surgery: surgical procedure in which a
laparoscope is inserted into a small incision to visualize the interior of the
abdomen and to look for the presence of cancerous tumors following cytoreduction
(debulking) surgery. This is sometimes done routinely during laparoscopic
surgery to reverse a colostomy, and may also be done in other select
circumstances. Sometimes visualization may be limited by scar tissue and
adhesions from prior surgeries.
Post-operative Follow-up testing:
Following cytoreduction surgery and/or peritoneal chemotherapy and possibly IV
chemotherapy for appendix cancer, testing will be done periodically to evaluate
for possible cancer recurrence.
CT scans will usually be done
approximately 3 months after surgery initially, then usually every 6 months for
the next 3-5 years, followed by yearly scans at the discretion of the surgeon
PET scans may also be done at the discretion of the
Tumor markers may be evaluated every 3-6 months,
again, depending on the preference of the surgeon or oncologist.
While on chemotherapy and for a period of time following chemotherapy, blood
tests will also be done to evaluate the effect of chemotherapy on blood counts.
A periodic comprehensive physical exam by a
physician and evaluation of any symptoms is also extremely important
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the information contained herein with other sources. The information on this website is not
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advice offered by physicians or health care providers. Patients and consumers
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Copyright © 2005-
2010 C. Langlie-Lesnik RN
BSN All rights Reserved
02/12/2010 12:50:09 PM