Genetics

Clinically viable blood test for donor-derived cell-free DNA

A new study, presented today at the AATS 101st Annual Meeting, shows that non-invasive cell-free DNA tests can reduce the need for regular surveillance biopsies to detect early rejection in heart transplant patients. The ...

Oncology & Cancer

21st century medical needles for high-tech cancer diagnostics

The diagnosis of diseases like cancer almost always needs a biopsy—a procedure where a clinician removes a piece of suspect tissue from the body to examine it, typically under a microscope. Many areas of diagnostic medicine, ...

Oncology & Cancer

Simple MRI measurement could avoid 30% of breast cancer biopsies

Breast cancer is the most common fatal cancer in women. Early detection increases a woman's chances of recovery. Magnetic resonance imaging (MRI) is an accurate technique for detecting and classifying tumors in breast tissue. ...

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 ...

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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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