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Doctor insights on: Does Colon Cancer Show Up In Blood Work

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If colon cancer was present would something show up in routine blood work?

If colon cancer was present would something show up in routine blood work?

Depends: Some times colon cancer can cause anemia and abnormal liver functions but not sensitive and specific enough. Cea is used to moniter patients with a history of colon cancer but not to make a diagnosis. ...Read more

Dr. Barry Rosen
4,223 doctors shared insights

Cancer (Definition)

Cancer is a group of diseases that is characterized by uncontrolled cell growth leading to invasion of surrounding tissues that spread to other parts of the body. Cancer can begin anywhere in the body and is usually related to one or more genetic mutations that allow normal cells to become malignant by interfering with internal cellular control mechanisms, such as programmed cell death or by preventing ...Read more


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What are the odds of a 18 year old with all normal blood work and no family history having colon cancer? change in bm looser stool no other symptoms

What are the odds of a 18 year old with all normal blood work and no family history having colon cancer? change in bm looser stool no other symptoms

Colon cancer RARE: 90% of colon cancer is in people 50 and up. The average age of a patient with colon cancer is 72. The odds of an adolescent having colon cancer is 0.31 in 1 000 000. You should discuss your many concerns about colon cancer with your doctor. A simple stool test may help reassure you. Good luck. ...Read more

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Wouldnt a blood test or cat scan show stomach or colon cancer.?

Wouldnt a blood test or cat scan show stomach or colon cancer.?

Not if early: A ct is not sensitive enough to find very small colon growths. There is a blood test the cea that is high in some cancers, but usually only when quite advanced and not specific to colon cancer. Now, a ct might suggest a colon cancer, however, colonoscopy is considered the gold standard for detecting colon growths. There is research into high definition ct but it is not considered a standard. ...Read more

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Does a intestinal or colon cancer show in a blood test thru the WBC ? And if there is no bleeding is it possible to be cancer?

Does a intestinal or colon cancer show in a blood test thru the WBC ? And if there is no bleeding is it possible to be cancer?

Then it is too late: Early intestinal and colon cancers ( GI ) are asymtamatic, WBC not useful , tumor markers like cea is mostly used for follow up for a recurrence of disease. Besides awareness only way for early detection is visit to your doctor, stool for occult blood, and endoscopy to achive the cure. ...Read more

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Doctor said to my dad he have colon cancer but the biopsy result was ok it show that is just polip.His blood test was ok aswell.What we should do now?

Doctor said to my dad he have colon cancer but the biopsy result was ok it show that is just polip.His blood test was ok aswell.What we should do now?

Repeat colonoscopy: Unless the pathology report comes back on the polyp as showing malignancy, he will need to have a follow-up colonoscopy to look for new polyps in the future (1-3 years). The timing will depend on risk factors, such as a history of ulcerative colitis, strong family history, completeness of colonoscopy, biopsy findings. If the pathology shows cancer, he should see a colorectal or general surgeon. ...Read more

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Chronic constipation for years while on levothyroxine 50mcg. 25 y/o f. Type #1 on bristol. Thyroid blood work says it's controlled. Diet stinks. Past 2 weeks diarrhea, no appetite. Colon cancer?

Chronic constipation for years while on levothyroxine 50mcg. 25 y/o f. Type #1 on bristol. Thyroid blood work says it's controlled. Diet stinks. Past 2 weeks diarrhea, no appetite. Colon cancer?

Unlikely: There are many reasons for constipation and for diarrhea. Typically colon cancer presents with bloody stools or no symptoms. It's also unlikely in young people which is why colonoscopy screenings are recommended after age 50, unless you have significant risk factors like family history or other certain medical problems. If you have diarrhea for >2 weeks, you should seek medical attention. ...Read more

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My sister is on chemotherapy (folfox for metastatic colon cancer). Recent blood test shows high WBC (14, 000) and platelets (429). Is this okay?

My sister is on chemotherapy (folfox for metastatic colon cancer).  Recent blood test shows high WBC (14, 000) and platelets (429). Is this okay?

No worries.: High WBC can be due to many causes: infection, stress, steroid use, dehydration, or the use of growth factor (such as neupogen). If there is no evidence of infection, then there is nothing to worry about. High platelet count is not uncommon since it is a body's reaction to stress of any cause (platelet is an acute phase reactant). Again, nothing to worry about. All the best, hk. ...Read more

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Would abd ultrasound and full blood count show something is wrong possibly colon cancer? No blood visible only loose stool. Diagnosed with ibs.

Would abd ultrasound and full blood count show something is wrong possibly colon cancer? No blood visible only loose stool. Diagnosed with ibs.

Loose stool: At your age colon cancer would be very rare. Abd US and full blood count are not the best tests to screen for colon cancer. A colonoscopy would be the better test. If your tests thus far are normal but still have symptoms, I would see your doctor for further testing. Colonoscopy would be the best test as I stated before if all other tests were normal. ...Read more

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Colicky/bloated pain ulq, can pinpoint it sometimes. Comes and goes. Loose stool x10 days, foul smelling. Some nausea. Abd xray, u/s normal. Blood work normal. Colon cancer? 25y f. No family history.

Colicky/bloated pain ulq, can pinpoint it sometimes. Comes and goes. Loose stool x10 days, foul smelling. Some nausea. Abd xray, u/s normal. Blood work normal. Colon cancer? 25y f. No family history.

Very unlikely: Although not impossible , colon cancer at 25 is very uncommon , in particular without family history . Colon cancer at 25 is almost always a genetic condition . Your symptoms are rather suggestive of bowel infection. ...Read more

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Dr. Eric Kaplan
923 doctors shared insights

Colon Cancer (Definition)

Final few yards of your intestine, between the terminal ileum (small bowell) and rectum. It squeezes water and solidifies waste to stool. It is subject to outpouching (divertics) polyps, and these can become cancers. The cells are abnormal, invade into the muscle and travel ...Read more


Dr. Lynne Weixel
1 doctor shared a insight

Colon (Definition)

The colon is another term for the large intestine. This is the final portion of the digestive system, responsible for absorbing water and storing stool before evacuation. It is divided into sections described as cecum; ascending, transverse, descending and ...Read more