Bladder Cancer
Medical Tests & Diagnosis Methods
Anamnesis (detailed medical review of past health state):
One of the first steps in establishing a bladder cancer diagnosis is a
detailed and complex medical review of a patient's past health problems
and general health state, family medical history, bladder cancer risk
factors, and symptoms.
Physical examination:
The doctor will examine the patient internally for signs of bladder cancer.
The physical examination differs for female and male patients. In men,
because the bladder is located near the prostate, the doctor will insert
a finger in the males rectum to feel the bladder, while in women,
the examination is performed through the vagina because the bladder is
located in the womb.
Urine Tests:
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Urine cytology: A sample of urine is
examined under microscope to check for abnormal cells. The
main disadvantage of this test is that it can miss low-grade
cancer.
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Urinalysis: This test checks the urine
color and measure its components such as sugar, proteins,
red and white blood cells.
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Tumor marker tests: These are urine tests
that measures the level of the substances released by the
tumors (called tumor makers). There are two marker tests approved
by the FDA: BTA and NMP22, but they are used only to detect
recurrent bladder cancer.
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Cystoscopy:
This is the most common and reliable test used to detect bladder cancer.
During this test, a thin tube with a camera attached at one end (cytoscope)
is inserted into the bladder through the urethra to examine the inside
walls of the bladder. The doctor can also remove a sample of tissue
for laboratory examination. This test can be performed under local anesthesia
(where an anesthetic jelly is inserted into the urethra) or general
anesthesia (situation where the patient needs to stay in the hospital).The
most common side effect of cystoscopy is a soreness or mild pain when
the patient urinates for the first time. The main disadvantage of this
test is that it can miss flat lesions (Carcinoma in situ) or small papillary
tumors. It is recommended that this test to be performed in combination
with other tests (such as imaging and urine tests) for a correct diagnosis.
Imaging tests
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Computed Tomography (CT): This imaging test
is similar with an x-ray test, and creates a detailed cross-sectional
image of the body. This test can identify abnormal mass tissues.
A CT scan is usually performed in two steps for a better diagnosis
outcome:
1). First, the targeted area is scanned without a contrast agent.
2). Second, the targeted area is scanned after a contrast agent
was administrated.
This imaging test offers essential information regarding the tumor
size, shape, and exact location, and also can outline if the cancer
spread to other organs.
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Magnetic Resonance Imaging (MRI): An MRI is
an advanced technique that uses radio waves and strong magnets to
reveal a complete image of a targeted area of the body. The energy
from the radio waves is absorbed by the tissues and then released
into a pattern that allows the cancer to be detected and diagnosed.
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Chest X-ray: An x-ray test uses high energy
electromagnetic radiation to penetrate the body and creates
its image on a film. The chest x-ray is performed only in women
with advanced stages of bladder cancer in order to establish whether
or not the cancer has spread to the lungs.
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Bone Scan: This test is used to detect if the
cancer has affected the bones. Before performing this test, the
patient receives, through an injection, a radioactive agent that
travels throughout the body and collects in areas where cancerous
cells have been collected.
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Intravenous Pyelogram (IVP): This imaging test
is an x-ray of the urinary tract. The patient, prior to the x-ray,
receives a dye agent which is removed from the bloodstream by the
kidneys and is passed into the ureters and bladder. The dye agent
allows the doctor to locate the cancer in the bladder.
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Fluorescence In Situ Hybridization (FISH):
This is a cytogenetic technique (the study of the structure of chromosome
material) used to detect and localize the presence of certain chromosomal
abnormalities often found in transitional cell cancer. This test
is efficient in detecting recurrent cancer before the tumor becomes
visually present. This test is used in clinic trials patients.
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Ultrasound Scan: Ultrasound imaging is a medical
technique that uses high-frequency sound waves to create an interior
image of the body on a special computer screen. This image is formed
from the echoes of the sound waves on the surface of the organs.
Abnormal tissue masses and organs reflect sound waves differently.
This test involves a device called transducer, that is placed on
the abdomen, and a computer that translates this sound into an image.
Ultrasound imaging is a safe, noninvasive and brief test that can
detect tumors. This test can check for blockages in the ureters
caused by possible tumors.
Biopsy:
Biopsy is a medical procedure where a tissue sample is removed from
the tumor or abnormal looking surface of an organ for a microscopic
examination. In bladder cancer patients, the biopsy is removed during
cystoscopy. In some cases, the entire tumor might be removed during
biopsy. This procedure allows the pathologist to establish the nature
of the cells and determine whether they are cancerous or not, and the
cancer type.

Article by Alina Morrow, MS
Medical Writer
OmniMedicalSearch.com
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