Doctor insights on:
A Colon Cancer Screening Test Works By Measuring
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
Many options: The gold standard is colonoscopy, which is performed under sedation. Other alternatives include barium enema, ct colonography ("virtual colonoscopy"), flexible sigmoidoscopy, and/or checking for blood in bowel movements (hemoccult test). I recommend colonoscopy for all my patients at age 50 (or earlier, if they have a family history). ...Read moreSee 1 more doctor answer
Will a colonoscopy detect anal cancer/mass as well colon cancer? Is the digital exam done before the colonoscopy is performed?
How accurately will a fecal test find early stage colon cancer? The one that looks for cancer blood markers. Please help!! Approximate percentage.
Pretty low: Conventional assessment of colorectal cancer (CRC) risk largely involves detection of non-dysplastic adenomatous polyps. Standardized sensitivity was 48.2%, for CRC stages I-IV, values were 35.0%, 63.0%, 46.0% and 77.4%, respectively. Specificity was 91.5%. Sensitivity for advanced adenomas was low (11.2%). Ref: Mol Diagn Ther. 2014 Apr;18(2):127 & Gut. 2014 Feb;63(2):317 ...Read moreSee 1 more doctor answer
Not gold standard: It's a pretty good screen but if you're having symptoms, you need to get 'scoped. ...Read more
Test for blood in BM: The fobt tests for blood in the stool. Test is performed on spontaneously voided stool on three separate occasions. Presence of blood in any of the samples is a "positive" test. Blood may indicate cancer, hemorrhoids, blood vessel abnormality, local irritation or a host of other non life threatening things. However, blood in the stool is a finding that needs follow up with a more specific test. ...Read moreSee 1 more doctor answer
No: Unfortunately, there are no good "screening" tests for ovarian cancer. When an ovarian cyst or mass is present and appears suspicious, your doctor may draw a ca-125 or ova-1 test. These tests can help predict the likelihood that it may or may not be concerning for cancer. ...Read moreSee 1 more doctor answer
Which test is recommended for checking that prostate cancer is organ-contained? A needle biopsy or a Trans-rectal MRI?
Radiography: Needle biopsy will only reveal tumor cells within the prostate gland. Usually, multiple core biopsies are obtained as cancer cells can be scattered throughout the prostate gland. To determine if the cancer has spread beyond the prostate locally, transrectal ultrasound or MRI would be more appropriate. To evaluate for metastatic disease, CT or PET scanning would be modalities of choice. ...Read moreSee 1 more doctor answer
Screening test: If * then further studies are indicated ...Read more
A friend has been told they have colon cancer, diagnosed via a tumour marker blood test, high cea, CT scan showed contained mass. Is this conclusive?
No, but...: But very suspicious for colon cancer. If your friend is similar in age to yourself a mass in the colon on ct scan is cancer until proven otherwise. And cea levels can go up for other reasons but, given the mass, they would strongly favor cancer. But to answer your question "no"... They are not definitive. You would need a piece of the mass under a microscope to prove definitively its cancer. ...Read moreSee 1 more doctor answer
May not: A digital rectal examination can only test as far a finger will go into the rectum. A finger inserted through the anus cannot reach colon, therefore a digital rectal examination cannot detect colon cancer. However, rectum is part of the colon and a common site for cancer and a digital rectal exam is useful. Colonoscopy remains the gold standard for detecting colon cancer. ...Read moreSee 1 more doctor answer
Is a CEA lab result of a 4.4 a good indicator for stage 4 colon cancer that perhaps the cancer has not spread that much? Better survival rate?
No: Cea (carcinoembryonicantigen) is a protein that is released by some tumors into the bloodstream. It is useful for follow-up of cancer after treatment, ie, if the cea is elevated before treatment and returns to normal after treatment, we are optimistic that the cancer was well-treated. If it then becomes elevated, we must search for recurrence. In your case, it is impt to know the # pre-rx. ...Read more
Imaging with CT: Can observe some cases, but will miss others, so it is not the best, endoscopy, endoscopic ultrasound, and ERCP or mr-cholangiography help, but all require biopsy proof. Next is categorizing for resection, the only successful treatment, and the vessels (sma, smv, portal vein) are the critical facts, as well as nodes, peritoneal and distant sotes of mets. ...Read moreSee 1 more doctor answer
Upper endoscopy: We do not perform routine screening for esophageal cancer. In japan where the risk of esophageal cancer is higher there is greater use of this test for screening. When patients do have symptoms of difficulty swallowing, pain on swallowing, hemoptysis (vomiting blood), anemic for unknown cause, heart burn not responsive to medication, episgastric pain (pain upper mid abdomen), endoscopy is needed. ...Read moreSee 3 more doctor answers
>40yo. Triple test hcg=30165u/l
calculated risk 1:83;
a soft marker, cardiac lesion, noted.
Chances for down's?
Examples are: colonoscopy for colon polyp or cancer; mammograms for breast lesions or cancer; psa a blood test that could indicate enlargement of cancerous prostate tissue; blood sugar or hemoglobin a!c for diabetes. Many think that scanning the whole body will pick up a cancer--in all likelihood, it will not. There also is no good blood test, yet, ...Read more
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