Neuroblastoma : Tests
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Signs vary depending on the location of the tumor. Examination of the abdomen with the hands (palpation) may find a mass. The liver may be enlarged, if the tumor has spread to the liver. Adrenal gland tumors can cause high blood pressure and a fas...
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Neuroblastoma is a type of cancer that usually originates either in the tissues of the adrenal gland or in the ganglia of the abdomen or in the ganglia of the nervous system. (Ganglia are masses of nerve tissue or groups of nerve cells.) Tumors de...
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Neuroblastoma is a type of cancer that usually originates either in the tissues of the adrenal gland or in the ganglia of the abdomen or in the ganglia of the nervous system. (Ganglia are masses of nerve tissue or groups of nerve cells.) Tumors de...
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A biopsy is the removal of a small piece of tissue for laboratory examination.
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A biopsy is the removal of a small portion of tissue from the body for microscopic examination. When a physician diagnoses the nature of an ailment, various examinations provide information that is vital to accurately determining the nature of the problem.
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Detailed information on biopsy, including the most common types of biopsy such as endoscopic biopsy, bone marrow biopsy, excisional biopsy, incisional biopsy, fine needle aspiration biopsy, punch biopsy, shave biopsy, and skin biopsy
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Biopsy is a diagnostic procedure in which a piece of tissue and/or cells are removed to be examined under a microscope by a pathologist. Purpose Biopsies are performed to determine the presence of cancer cells, establish tumor grading , and provide more information for treatment.
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Detailed information on several of the different divisions of anatomical pathology, including biopsy, surgical pathology, cytology, and autopsy
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Image-Guided BiopsyAbiopsyis a small sample of tissue or fluid taken from the body. This sample can then be studied in a laboratory.
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If You Are Having a BiopsyQuestions for the doctor:What type of biopsy will I have?Why do I need a biopsy?
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Detailed information on biopsy and the biopsy report
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A medical procedure used to diagnose a condition. Most biopsies involve taking a small piece of skin or muscle under a local anesthetic.
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A bone marrow biopsy is the removal of soft tissue from inside bone. Bone marrow grows inside some of the larger bones in the body. It produces platelets and red and white blood cells.
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A bone scan is a test that detects areas of increased or decreased bone metabolism (turnover. The test is performed to identify abnormal processes involving the bone such as tumor, infection, or fracture.
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A bone scan is a diagnostic imaging procedure used to evaluate abnormalities involving bones and joints. A radionuclide is injected intravenously, and its distribution in the skeletal system is analyzed to detect certain diseases or conditions.
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A bone scan is an imaging test that uses a special camera to form images of your bones. It is used to diagnose bone problems, such as fractures, cancer, or infections, and joint problems such as arthritis. It is also used to check joint replacements.
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A bone scan is a diagnostic procedure used to evaluate abnormalities involving bones and joints. A radioactive substance is injected intravenously, and the image of its distribution in the skeletal system is analyzed to detect certain diseases or conditions.
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A complete blood count (CBC) test measures the following: The number of red blood cells (RBCs; The number of white blood cells (WBCs; The total amount of hemoglobin in the blood; The fraction of the blood composed of red blood cells (hematocrit; The mean corpuscular volume (MCV) - the size of the red blood cells. CBC also includes information about the red blood cells that is calculated from the other measurements: MCH (mean corpuscular hemoglobin; MCHC (mean corpuscular hemoglobin concentration.
The platelet count is also usually included in the CBC.
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One of the most commonly ordered clinical laboratory tests, a blood count, also called a complete blood count (CBC), is a basic evaluation of the cells (red blood cells, white blood cells, and platelets) suspended in the liquid part of the blood (plasma). It involves determining the numbers, concentrations, and conditions of the different types of blood cells.
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A complete blood count (CBC) is a series of tests used to evaluate the composition and concentration of the cellular components of blood. It consists of the following tests: red blood cell (RBC) count, white blood cell (WBC) count, and platelet count; measurement of hemoglobin and mean red cell volume; classification of white blood cells (WBC differential); and calculation of hematocrit and red blood cell indices .
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The clinical laboratory test that evaluates the three main cellular components of peripheral blood (red cells, white cells, and platelets) is called the " complete blood count " (CBC). It is used commonly to assess whether a patient is anemic (low red cell count), has an infection (increased white blood cells), or has abnormal blood coagulation (platelet levels).
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A complete blood count (CBC) is a series of tests used to evaluate the composition and concentration of the cellular components of blood. It consists of the following tests: red blood cell (RBC) count, white blood cell (WBC) count, and platelet count; measurement of hemoglobin and mean red cell volume; classification of white blood cells (WBC differential); and calculation of hematocrit and red blood cell indices .
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Computed tomography (CT) an imaging method that uses x-rays to create cross-sectional pictures of the body.
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Computed Tomography (CT)Computed tomography(CT) is a test that combines x-rays and computer scans. The result is a detailed picture that can show problems with soft tissues (such as the lining of your sinuses), organs (such as your kidneys or lung...
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Detailed information on ultrafast computed tomography scans, also called ultrafast CT scan or ultrafast CAT scan, including information on how the procedure is performed
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Detailed information on CT scan, including how the CT scan is performed and what happens after the procedure
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Detailed information on computed tomography scans, also called CT scan or CAT scan, including information on how the procedure is performed
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Detailed information on ultrafast computed tomography (CT) scan, including reasons for the procedure, risks of the procedure, what to expect, and discharge instructions
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Computed tomography (also known as CT, CT scan, CAT, or computerized axial tomography) scans use x rays to produce precise cross-sectional images of anatomical structures. With the development of modern computers, the scans enhanced digital capabilities allowed the development of computed tomography imaging (derived from the Greek tomos , meaning " to slice " ).
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Computed tomography scanning, also called CT scan, CAT scan, or computerized axial tomography, is a diagnostic tool that provides views of internal body structures using x rays. In the field of mental health, a CT scan may be used when a patient seeks medical help for symptoms that could possibly be caused by a brain tumor.
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Computed tomography (CT) scans are completed with the use of a 360-degree x-ray beam and computer production of images. These scans allow for cross-sectional views of body organs and tissues.
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Computed tomography (CT) scanning is a valuable diagnostic tool that provides physicians with views of internal body structures. During a CT scan, multiple x rays are passed through the body, producing cross-sectional images, or " slices, " on a cathode-ray tube (CRT), a device resembling a television screen.
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Computed tomography (CT), formerly referred to as computerized axial tomography (CAT), is a common diagnostic imaging procedure that uses x rays to generate images (slices) of the anatomy. Purpose Computed tomography (CT) is an x-ray imaging procedure used for a variety of clinical applications.
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What is the difference between a pelvic CT scan and an abdominal CT scan?
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Is there an alternative to iodine as a contrast medium in a CT scan?
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During a physical examination, a health care provider studies a patient's body to determine the presence or absence of physical problems. A typical physical examination includes: Inspection (looking at the body; Palpation (feeling the body with hands; Auscultation (listening to sounds; Percussion (producing sounds.
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Magnetic resonance imaging (MRI) is a non-invasive way to take pictures of the body. Unlike x-rays and computed tomographic (CT) scans, which use radiation, MRI uses powerful magnets and radio waves. The MRI scanner contains the magnet. The magnetic field produced by an MRI is about 10 thousand times greater than the earth's. The magnetic field forces hydrogen atoms in the body to line up in a certain way (similar to how the needle on a compass moves when you hold it near a magnet. When radio waves are sent toward the lined-up hydrogen atoms, they bounce back, and a computer records the signal. Different types of tissues send back different signals. For example, healthy tissue sends back a slightly different signal than cancerous tissue. Single MRI images are called slices. The images can be stored on a computer or printed on film. MRI can easily be performed through clothing. However, because the magnet is very, very strong, certain types of metal can cause significant errors, called artifacts, in the images.
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Cardiac nuclear imaging is also called a “perfusion scan.” A radioactive tracer is delivered into the bloodstream. Then a camera scans the tracer in the blood as it flows through the heart muscle.
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New MRI machines and new techniques result in images that show prostate cancer in much greater detail, allowing biopsies to be targeted more precisely, and thus cancer staging can be more accurate as well.
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Detailed information on magnetic resonance imaging, including how the image is performed and what happens following the procedure
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Magnetic Resonance Imaging (MRI)Magnetic resonance imaging(MRI) is a test that lets your doctor see detailed pictures of the inside of your body. MRI combines the use of strong magnets and radio waves to form an MRI image.Before Your TestMRI uses ...
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Studies have found that MRI tests used in addition to mammography detected more cancers in women at high risk for breast cancer. Women at average risk would not necessarily benefit from the additional testing.
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A Harvard Medical School physician answers your question about the safety of MRIs for those who have stents.
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When I had an MRI of my knee, I was told the test was dangerous for people who have metal devices in their bodies. Since then, I developed angina and my cardiologist put in a metal stent. If I need an MRI in the future, will I be able to get one?
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Is a regular MRI more accurate then an open MRI?
Diana Post, M.D., is an assistant professor of medicine at Harvard Medical School and a member of the Department of Medicine at Brigham and Women's Hospital.
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For women at high genetic risk, adding MRI screening to mammography may improve early detection of breast cancer.
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Persons with pacemakers cannot get an MRI because it conflicts with the pacemaker's function. Future pacemakers will likely be made MRI-safe, but this will probably take at least several more years.
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How safe is it for a baby who is 6 months old to have an MRI?
Claire McCarthy, M.D., is a senior medical editor for Harvard Health Publications. She is an instructor in pediatrics at Harvard Medical School, an attending physician at Children's Hospital of Boston, and co-director of the pediatrics department at Martha Eliot Health Center, a neighborhood health service of Children's Hospital. The author of two books, "Learning How the Heart Beats" and "Everyone's Children", Dr. McCarthy was a regular columnist for "Sesame Street Parents Magazine" from 1995 to 1998 and is currently a contributing editor for "Parenting Magazine".
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Magnetic resonance imaging (MRI) is a unique and versatile medical imaging modality. Doctors can obtain highly refined images of the body ' s interior using MRI.
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Magnetic resonance imaging (MRI) is a unique and versatile medical imaging diagnostic tool. Using MRI, physicians obtain highly refined images of the body ' s interior.
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Magnetic resonance imaging (MRI) scanners rely on the principles of atomic nuclear-spin resonance. Using strong magnetic fields and radio waves, MRI collects and correlates deflections caused by atoms into images.
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Magnetic resonance imaging (MRI) is one of the newest diagnostic medical imaging technologies that uses strong magnets and pulses of radio waves to manipulate the natural magnetic properties in the body to generate a visible image. In the field of mental health, an MRI scan may be used when a patient seeks medical help for symptoms that could possibly be caused by a brain tumor.
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Magnetic resonance imaging (MRI) is the newest, and perhaps most versatile, medical imaging technology available. Doctors can get highly refined images of the body ' s interior without surgery, using MRI.
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Magnetic resonance imaging (MRI) is a diagnostic imaging procedure that uses radio waves, a magnetic field, and a computer to generate images of the anatomy. Purpose MRI is used to visualize the body to assist doctors in their efforts to diagnose certain diseases or conditions and to evaluate injuries.
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Magnetic resonance imaging (MRI) is one of the newest, and perhaps most versatile, medical imaging technology available. Doctors can get highly refined images of the body ' s interior without surgery using MRI.
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Detailed information on magnetic resonance imaging (MRI), including information on how the procedure is performed
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People with certain kinds of pacemakers or ICDs can safely undergo an MRI, as long as a series of safety precautions is carefully followed.
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