Oncology & Cancer

MRI can cut overdiagnoses in prostate-cancer screening by half

Most countries have not introduced nationwide prostate-cancer screening, as current methods result in overdiagnoses and excessive and unnecessary biopsies. A new study by researchers at Karolinska Institutet in Sweden, which ...

Oncology & Cancer

Liquid biopsy for colorectal cancer could guide therapy for tumors

A new study from Washington University School of Medicine in St. Louis demonstrates that a liquid biopsy examining blood or urine can help gauge the effectiveness of therapy for colorectal cancer that has just begun to spread ...

Medical research

Targeted ultrasound for noninvasive diagnosis of brain cancer

Brain tumors are typically diagnosed using MRI imaging, as taking a sample for a tissue biopsy is risky and may not be possible due to tumor location or a patient's poor health conditions. Researchers at Washington University ...

Medical research

Blood test can predict prognosis in deadly brain cancer

A blood test that measures the amount of cell-free DNA (cfDNA) in the bloodstream—called a liquid biopsy—correlates with how patients will progress after they are diagnosed with glioblastoma (GBM), the deadliest and most ...

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Biopsy

A biopsy is a medical test involving the removal of cells or tissues for examination. It is the removal of tissue from a living subject to determine the presence or extent of a disease. The tissue is generally examined under a microscope by a pathologist, and can also be analyzed chemically. When an entire lump or suspicious area is removed, the procedure is called an excisional biopsy. When only a sample of tissue is removed with preservation of the histological architecture of the tissue’s cells, the procedure is called an incisional biopsy or core biopsy. When a sample of tissue or fluid is removed with a needle in such a way that cells are removed without preserving the histological architecture of the tissue cells, the procedure is called a needle aspiration biopsy.

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