Diagnosis of Gastrointestinal cancer

The diagnosis process of gastrointestinal cancer comprises of various test and procedure.  You may get the detail of this cancer from this page ; what is gastrointestinal cancer? The diagnosis process starts with the physical exam and after checking the medical history, sign and symptoms of cancer doctor suggest different tests.

Blood/urine tests:

In order to check the functioning of various organ blood test is taken by the physician while the purpose of urine test is to detect protein, sugar, or other abnormalities.

Computed tomography (CT or CAT) scan:

The three-dimensional images of inside body are created via an x-rays machine that is connected with a computer. The doctors evaluate these images to diagnose this cancer.  Sometimes a special dye is injected to the patient’s vein so that the better and contrast result can be attained.

Fecal occult blood test:

With the help of this test the doctors try to identify occult blood in the stool, the cause of which is the cancer of gastrointestinal tract. During this test the doctors placed a small amount of stool on a plastic slide or on a special paper for examining.

X-rays :

The doctor may use this technique to check whether GI tract cancer spread to other organs and areas or not. For this purpose, chest x-rays is administered if the cancer invaded the lungs.  The doctor may give the barium to the patient who swallow it and after  this substance outlines  the GI tract and doctors take the x-rays to determine whether this cancer has spread to esophagus or to stomach that are  upper  areas of GI tract. This test helps the doctors to check any kind of abnormalities or tumor.


A lighted, flexible tube named as gastroscope is inserted through the mouth to esophagus then to small bowel via stomach.  The doctor see  the inside area of body to find out any tumor growth.

Endoscopic ultrasound:

The procedure of this test is resembled with endoscopy. With the help of sound waves the doctors diagnose this cancer.   The tumor produces different echoes than that of normal organs therefore when the waves are bounced backed because of abnormalities, images are created. By checking these images physician will find out  a mass inside the body.

Magnetic resonance imaging (MRI):

The detailed cross-sectional images are obtained with the mean of magnetic fields. Through MRI, the doctors try to know about the prevalence of gallbladder cancerous cells.

Positron emission tomography (PET) scan:

In this test a small amount of radioactive substance is injected into the body. After some time this substance absorb in the tumor. With the mean of PET scanning the doctor scans the tissue and identifies the abnormalities.


It includes the removal of a small tissue as a sample that is examined by pathologist for identification of extent and cause of gastrointestinal cancer.

Filed Under: Gastrointestinal Cancer

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