Some gallbladder cancers are found after a gallbladder has been removed for treatment of gallstones or chronic (long-term) gallbladder inflammation. Gallbladders removed for those reasons are always looked at under a microscope by a pathologist (a doctor specializing in lab tests) to see if they contain cancerous cells.

Most gallbladder cancers, though, are not found until patients go to a doctor because they have symptoms.

Signs and symptoms of gallbladder cancer

Signs and symptoms are usually not present until the later stages of gallbladder cancer, in some cases they may lead to an early diagnosis. If you go to your doctor when you first notice symptoms, your cancer might be diagnosed at an early stage, when it is most treatable. Some of the most common symptoms of gallbladder cancer are:

Abdominal pain: Most people with gallbladder cancer have abdominal (stomach area) pain at the time of diagnosis. Most often this is in the upper right part of the abdomen.

Nausea and/or vomiting: At the time of their diagnosis, many people with gallbladder cancer report vomiting as a symptom.

Jaundice: Jaundice is a condition that gives a yellowish color to the skin and the white part of the eyes. Some patients with gallbladder cancer have jaundice when they are diagnosed.

Gallbladder enlargement: Sometimes bile duct blockage causes bile to build up in the gallbladder, causing it to become larger than usual. This can sometimes be felt by the doctor during a physical exam and can also be detected by imaging studies such as ultrasound.

Other symptoms: Less common symptoms include loss of appetite, weight loss, abdominal swelling, severe itching, and black, tarry stools.

Although these are symptoms and signs of gallbladder cancer, it is important to remember that they are more likely to be caused by non-cancerous diseases. For example, many of these symptoms are also seen in people with gallstones. There are many causes of abdominal pain that are far more common than gallbladder cancer. And hepatitis (infection of the liver by a virus) is a much more common cause of jaundice. Still, if you have any of these problems, it's important to see your doctor right away so the cause can be found and treated, if needed.

History and physical exam

If you have any signs or symptoms that suggest you might have gallbladder cancer, your doctor will want to take a complete medical history to check for symptoms and risk factors, including your family history.

A physical exam is done to look for signs of gallbladder cancer and other health problems. If gallbladder cancer is suspected, the exam will focus mostly on the abdomen to check for any masses, tenderness, or build up of fluid. The skin and the white part of the eyes will be checked for jaundice (a yellowish color). Sometimes, cancer of the gallbladder spreads to lymph nodes, causing a lump that can be felt beneath the skin. Lymph nodes above the collarbone and in several other locations will be examined carefully.

If symptoms and/or the results of the physical exam suggest gallbladder cancer might be present, more involved tests will likely be done. These might include lab tests, imaging tests, and other procedures.

Blood tests

Tests of liver and gallbladder function: Doctors may order lab tests to determine how much bilirubin is in the blood. Bilirubin is the chemical that gives the bile its yellow color. Problems in the gallbladder or liver may cause too much bilirubin to remain in the blood, which can lead to the yellow color of the skin and whites of the eyes (jaundice). A high bilirubin count tells the doctor that there may be either gallbladder or liver problems.

The doctor may also order tests for other substances in your blood, such as albumin, alkaline phosphatase, AST, ALT, and GGT, that can also give an indication of liver or gallbladder disease.

Tumor markers: CEA and CA 19-9 are tumor markers (proteins found in the blood when certain cancers are present). High levels of these substances are often (but not always) found in people with gallbladder cancer. Usually the blood levels of these markers are high only when the cancer is in an advanced stage.

Imaging tests

Imaging tests use x-rays, magnetic fields, or sound waves to create pictures of the inside of your body. Imaging tests may be done for a number of reasons, including to help find a suspicious area that might be cancerous, to learn how far cancer may have spread, and to help determine if treatment has been effective.

Ultrasonography (ultrasound)

Ultrasound is often the first imaging test done in people who have symptoms such as jaundice or pain in the right upper part of their abdomen. For this test, a small instrument called a transducer emits sound waves and picks up their echoes as they bounce off internal organs. The echoes are converted by a computer into a black-and-white image that is displayed on a video screen. The echoes produced by most tumors differ from those of normal tissue. The patterns of echoes can help distinguish between some types of benign and malignant tumors.

This is a very easy procedure to have done, and it uses no radiation. For an ultrasound exam, you simply lie on a table while the doctor or ultrasound technician places the transducer (which is shaped like a wand) on the skin over the part of your body being looked at. Usually, the skin is first lubricated with gel.

Endoscopic or laparoscopic ultrasound: These relatively new techniques allow the doctor to place the ultrasound transducer inside the body and closer to the gallbladder to produce more detailed images than a standard ultrasound. The transducer is on the end of a thin, lighted tube that has an attached viewing device (an endoscope or laparoscope). The tube is either passed through the mouth and down through the stomach and near the gallbladder area (endoscopic ultrasound) or through a surgical incision (cut) in the side of the patient's body (laparoscopic ultrasound). If there is a tumor, the doctor may be able to tell if and how far it has invaded the gallbladder wall, which helps in planning for surgery. Ultrasound may be able to show if nearby lymph nodes are enlarged, which may be a sign that cancer has reached them. It may also be used to guide a needle into a suspicious node so that cells can be removed (biopsied) and viewed under a microscope.

Computed tomography (CT) scan

The CT scan is an x-ray procedure that produces detailed cross-sectional images of your body. A computer then combines these into images of slices of the part of your body that is being studied. Prior to the scan, you may be asked to drink a contrast solution and/or get an intravenous (IV) injection of a contrast dye that helps better outline abnormal areas in the body.

You may need an IV line through which the contrast dye is injected. The injection can cause some flushing (redness and warm feeling). Some people are allergic and get hives or, rarely, more serious reactions like trouble breathing and low blood pressure. Be sure to tell the doctor if you have ever had a reaction to any contrast material used for x-rays.

You need to lie still on a table while the scan is being done. During the test, the table moves in and out of the scanner, a ring-shaped machine that completely surrounds the table. You might feel a bit confined by the ring you have to lie in while the pictures are being taken.

In recent years, spiral CT (also known as helical CT) has become available in many medical centers. This type of CT scan uses a faster machine. The scanner part of the machine rotates around the body continuously, allowing doctors to collect the images much more quickly than standard CT. As a result, you do not have to hold your breath for as long while the image is taken. This lowers the chance of blurred images occurring as a result of breathing motion. It also lowers the dose of radiation received during the test. The slices it images are thinner, which yields more detailed pictures.

CT scans can have several uses:

• They are often used to help make the initial diagnosis of gallbladder cancer by showing tumors in the area.

• They can be helpful in staging the cancer (determining the extent of its spread). CT scans can also show the organs near the gallbladder (especially the liver), as well as lymph nodes and distant organs where cancer may have spread to. This can help to determine if surgery is a good treatment option.

• CT scans can also be used to guide a biopsy needle precisely into a suspected tumor or metastasis. For this procedure, called a CT-guided needle biopsy, the patient remains on the CT scanning table, while a radiologist advances a biopsy needle through the skin and toward the location of the mass. CT scans are repeated until the needle is within the mass. A biopsy sample is then removed and looked at under a microscope.

Magnetic resonance imaging (MRI) scan

Like CT scans, MRI scans provide detailed images of soft tissues in the body. But MRI scans use radio waves and strong magnets instead of x-rays. The energy from the radio waves is absorbed and then released in a pattern formed by the type of body tissue and by certain diseases. A computer translates the pattern into very detailed images of parts of the body. A contrast material called gadolinium is often injected into a vein before the scan to better see details.

MRI scans provide a great deal of detail and can be very helpful in looking at the gallbladder and nearby bile ducts and other organs. Sometimes they can help tell a benign tumor from a malignant one. Special types of MRI scans may also be used in people who may have gallbladder cancer. MR cholangiopancreatography (MRCP), which can be used to look at the bile ducts, is described below in the section on cholangiography. MR angiography (MRA), which looks at blood vessels, is mentioned below in the section on angiography.

MRI scans may be a little more uncomfortable than CT scans. They take longer -- often up to an hour. You may be placed inside a large cylindrical tube, which is confining and can upset people with a fear of enclosed spaces. Newer, "open" MRI machines can help with this if needed. The MRI machine makes buzzing and clicking noises that you may find disturbing. Some places will provide earplugs to help block this out.

Cholangiography

A cholangiogram is an imaging test that looks specifically at the bile ducts to see if they are blocked, narrowed, or dilated. They can be used in people who may have gallbladder cancer to help plan surgery. There are several types of cholangiograms, which have different pros and cons.

Endoscopic retrograde cholangiopancreatography (ERCP): In this procedure, a doctor passes a long, flexible tube (endoscope) down the patient's throat, through the stomach and first part of the small intestine, and into the common bile duct. A small amount of contrast dye is passed through the tube to help outline the bile duct and pancreatic duct as x-rays are taken. The images can show narrowing or blockage of the bile duct or pancreatic duct. This test is more invasive than MRCP (see below), but the advantage is that the doctor can use the endoscope to take samples of cells or fluid to be viewed under a microscope. It can also be used to place a stent (a small tube) into a duct to help keep it open.

Magnetic resonance cholangiopancreatography (MRCP): This is a less invasive way to image the bile ducts using the same type of machine used for standard MRI scans. It does not require an endoscope or an IV infusion of a contrast agent.

Percutaneous transhepatic cholangiography (PTC): In this procedure, the doctor places a thin, hollow needle through the skin and into a bile duct within the liver. (A local anesthetic is used to numb the area before inserting the needle.) A contrast dye is then injected through the needle, and x-rays are taken as it passes through the bile ducts. As with ERCP, this approach can also be used to take samples of fluid or tissues.

Angiography

Angiography is an x-ray procedure for looking at blood vessels. For this test, a small amount of contrast dye is injected into an artery to outline blood vessels before x-ray images are taken. The images allow the doctors to see if blood flow in an area is blocked or hindered by a tumor, and they can show any abnormal blood vessels in the area. Angiography can also show whether a gallbladder cancer has grown through the walls of certain blood vessels. This information is mainly used to help surgeons decide whether a cancer can be removed and to help plan the operation.

Angiography can be uncomfortable because the radiologist who does the procedure has to put a small catheter (a flexible hollow tube) into the artery leading to the gallbladder to inject the dye. Usually the catheter is put into an artery in your inner thigh and threaded up into the artery supplying the gallbladder. A local anesthetic is often used to numb the area before inserting the catheter. Then the dye is injected quickly to outline all the vessels while the x-rays are being taken.

Angiography may also be done with a CT scanner (CT angiography) or an MRI scanner (MR angiography). These techniques give information about the blood vessels in the liver without the need for a catheter, although you may still need an IV line so that a contrast dye can be injected into the bloodstream during the imaging.

Laparoscopy

In a laparoscopic procedure, a doctor inserts a thin tube with a light and a small video camera on the end (a laparoscope) through the abdominal wall to view the gallbladder, the liver, and other organs and tissues in the area. The tube is inserted through a small incision (cut) in the front of the abdomen. (Sometimes more than one cut is made.) This procedure is typically done in the operating room while you are under general anesthesia (in a deep sleep).

Laparoscopy provides a view of organs that can help in planning surgery or other treatments, and can help doctors confirm the stage (extent) of the cancer. If needed, doctors can also insert instruments through the incisions to remove small tissue samples to be looked at under a microscope.

Laparoscopy is often used to remove the gallbladder as a treatment for gallstones or chronic inflammation of the gallbladder. This operation is called a laparoscopic cholecystectomy. If gallbladder cancer is found or suspected during that operation, surgeons usually convert the operation to an open cholecystectomy (removal of the gallbladder through a larger cut in the abdomen) to lower the chance of releasing cancer cells into the abdominal cavity while removing the gallbladder. This depends on the size of the cancer and whether all the cancer was removed by the surgery.

Biopsy

For many types of cancer, a biopsy (removing a piece of tumor and looking at it under a microscope) is needed to confirm the diagnosis before treatment is planned.

But a biopsy may not always be done before surgery for a possible gallbladder cancer. Doctors are often concerned that sticking a needle into the tumor or otherwise disturbing it without completely removing it might allow cancer cells to spread to other areas.

If imaging tests (ultrasound, CT or MRI scans, cholangiography, etc.) suggest there is a tumor in the gallbladder and there are no obvious signs of distant spread, the doctor may decide to proceed directly to surgery and to treat it as a gallbladder cancer (see "How is gallbladder cancer treated?"). In these cases, the gallbladder tissue is looked at under a microscope after the gallbladder is removed.

But in some cases, a doctor may feel that a biopsy of a suspicious area in the gallbladder is the best approach. For example, imaging tests may show that a tumor has spread or grown too large to be completely removed by surgery. Unfortunately, many gallbladder cancers are not removable at the time they are first found.

Types of biopsies

There are several ways to take biopsy samples of the gallbladder.

If cholangiography is being done, a sample of bile may be collected during the procedure to look for tumor cells within the fluid.

As noted earlier, biopsy specimens can be taken during laparoscopy. This allows the doctor to view the surface of the gallbladder and take samples of suspicious areas.

If the cancer appears to be too advanced for surgery, a needle biopsy may be done. For this test, a thin, hollow needle is inserted through the skin and into the tumor without making a surgical incision. (The skin is numbed first with a local anesthetic.) The needle is usually guided into place using ultrasound or CT scanning. With this approach, the needle is slowly moved forward while doctors check its position by viewing images provided by one of these imaging tests. When the images show that the needle is in the tumor, a sample is drawn into the needle and sent to the lab to be viewed under a microscope.

In most cases, this done as a fine needle aspiration (FNA) biopsy, which uses a very thin needle attached to a syringe to suck out (aspirate) a sample of cells. If this isn't successful, a core needle biopsy may be done, which uses a slightly larger needle to get a bigger sample. Doctors don't usually do a core needle biopsy first because it has a higher chance of spreading cancer cells.

Last Medical Review: 01/13/2009
Last Revised: 05/13/2009